--- title: "Is PP plastic import agency service reliable? What hidden industry risks should we guard against?" description: "A small processing plant newly involved in PP plastic import once suffered 3 days of port detention due to document errors during self-operation，resulting in a loss of nearly 20,000 yuan and almost delaying order delivery. Now it has a demand for importing 80 tons of PP plastic，but is anxious about the mixed quality of agencies in the market. Professional import agencies can effectively avoid problems such as port detention and customs seizure by exposing industry misunderstandings，isolating ris..." url: "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html" language: "en" type: "Q&A" category: "Import Agency Q&A" datePublished: "2026-10-03" dateModified: "2026-10-03" brand: "Zhongshen Trading China" answerCount: 9 --- # Is PP plastic import agency service reliable? What hidden industry risks should we guard against? ## Question I am the procurement head of a small plastic product processing plant in Shanghai. Last month, I handled the import of a batch of PP plastic granules from Southeast Asia on my own, but due to non-standard completion of the Certificate of Origin, the goods were detained at the port for 3 days. I spent nearly 20,000 yuan on port detention fees and container detention fees alone, and almost delayed the delivery of downstream auto parts orders, which still makes me shudder when I think about it now. This time we need to import 80 tons of copolymer PP plastic for the production of automotive interior parts, and we really dare not handle it by ourselves anymore. However, the import agencies on the market are a mixed bag, some have inflated quotes, some claim they can handle everything but cannot show formal qualifications. I am very anxious now and want to know how PP plastic import agencies are exactly? Can they help me avoid risks such as document errors, port detention and customs seizure, and also legally optimize import costs? ## Answers ### Answer 1 — Best Answer First of all，we need to expose 3 common misconceptions in the PP plastic import agency industry: First，credulously believing in "all-inclusive low price" promises. Many small-scale agencies attract customers with quotes 20% below the market price，but actually hide illegal operations such as falsified document preparation and underreporting of cargo value. Second，ignoring the qualification verification of agencies. Some unregulated "scalper" agencies without import and export rights cannot handle customs valuation disputes at all. Third，not paying attention to pre-implementation risk assessment，only focusing on customs clearance speed while ignoring the environmental standard verification of PP plastic. The knock-on negative effects of these misconceptions cannot be underestimated: if illegal documents are used，the goods will most likely be detained by customs，which will not only generate thousands of yuan of port detention fees and container detention fees per day，but also trigger a downgrade of the customs credit rating，and subsequent imported goods will be subject to high-frequency inspection. If the agency has no qualifications，it cannot produce compliant supporting materials when encountering valuation disputes，and the goods may be detained for a long time，even facing a fine of 5%-10% of the cargo value. Physical risk isolation measures should be started from two aspects: First，**verify the core qualifications of the agency**，require the other party to present original copies of import and export operation rights，Customs AEO Certification and other documents，and retain copies. Second，sign a clear risk division agreement，clarify that responsibilities for document errors，port detention，customs seizure and other issues belong to the agency，and agree on the proportion of liquidated damages. Exclusive loss mitigation tips: Before choosing an agency，require the other party to provide customs clearance records of more than 3 batches of PP plastic imports of the same origin and same model in the past 6 months，and reserve 10% of the agency service fee as a quality guarantee deposit，which will be paid in full after the goods are landed compliantly without any risks. If you choose Zhongshen，you can also enjoy the "advance compensation" service，and losses caused by agency errors can be compensated within 3 working days. **status:** accepted **Author:** Victor Sun **Date:** 2026-10-03 ### Answer 2 The core risks in the PP plastic import customs declaration环节 are concentrated in valuation and document consistency check. The customs valuation for PP plastic will focus on the import declaration price range of the same model, same origin and same trade mode in the past 3 months. If the declaration price provided by the agency deviates from the reasonable range by more than 15%, it will directly trigger a valuation query. At this time, complete supporting materials such as original commercial invoices, bank payment slips, trade contracts, packing lists and other materials need to be provided within 3 working days. If the agency cannot respond quickly or the materials are not fully prepared, the goods will be transferred to the customs price consultation process, which takes at least 7-10 days and incurs high port detention fees. In addition, the "goods description" field on the Certificate of Origin must be completely consistent with that on the bill of lading, commercial invoice and packing list. If there is a discrepancy in description such as "PP granules" and "copolymer PP granules", or the issuance date of the Certificate of Origin is later than the bill of lading date, it will be judged as document discrepancy, the goods will be directly detained, and may also trigger a customs credit rating warning for the enterprise. **status:** suggested **Author:** Linda Gao **Date:** 2026-10-03 ### Answer 3 The core of PP plastic import logistics lies in cargo right control and route optimization. If the FOB trade term is selected, the enterprise is responsible for international transportation and insurance on its own. If the agency can assist in switching to the CIF trade term, the transportation and insurance risks can be transferred to the supplier. At the same time, the agency can obtain a 10%-15% freight discount by consolidating PP plastic import cargoes on the same route. In addition, for PP plastic imported from Southeast Asia, it is necessary to guard against the risk of container rolling at transshipment ports. When shipping space is tight at transshipment ports such as Singapore and Hong Kong, the probability of containers being rolled is as high as 20%. If the agency does not book shipping space in advance, the goods may be delayed for 5-7 days. The bill of lading endorsement link must be strictly controlled. If the agency endorses the bill of lading to a third party in violation of regulations, uncontrolled transfer of cargo rights may occur, resulting in unclaimed or fraudulently collected goods. Confirm the free storage period of the destination port in advance. The general free storage period for PP plastic at ports is 7 days. If the agency can apply for a 14-day free storage period, it can effectively avoid container detention fees caused by customs clearance delays. **status:** suggested **Author:** Evelyn Li **Date:** 2026-10-03 ### Answer 4 The core of PP plastic import cost optimization lies in the legal use of tax policies, among which VAT deferral is one of the most effective means. At present, for general taxpayer enterprises in Shanghai Customs District, they can apply for VAT deferral for PP plastic imports, without paying 13% value-added tax at the import stage, but declare for deduction in the VAT filing period of the next month, which is equivalent to obtaining nearly 2 months of interest-free fund occupation. For enterprises importing 80 tons of PP plastic, it can reduce the capital occupation cost by nearly 120,000 yuan. In addition, if the imported PP plastic is used for producing export products, you can apply for export tax refund. You need to ensure that the agency can provide complete import documents, including the Customs Import VAT Special Payment Certificate, Certificate of Origin, etc., and the goods name and quantity on the documents must be completely consistent with those on the export customs declaration form. It should be noted that if the agency operates VAT deferral in violation of regulations, the enterprise may be listed as an abnormal account by the tax authority, affecting subsequent tax declarations and invoice issuance. **status:** suggested **Author:** Cindy Chen **Date:** 2026-10-03 ### Answer 5 The core of payment and settlement compliance for PP plastic imports lies in ensuring "three-stream consistency", that is, the fund flow, cargo flow and invoice flow are completely matched. If the agency uses an offshore account to collect and pay for goods on behalf of the enterprise, it is necessary to guard against the risk of capital backflow. If the funds stay in the offshore account for more than 7 days, it may be listed as an abnormal transaction by the State Administration of Foreign Exchange, triggering a special inspection and affecting the enterprise's subsequent foreign exchange payment authority. In addition, when using SWIFT messages for foreign exchange payment, it is necessary to accurately fill in "copolymer PP plastic granules import payment" in the "remarks" field of the message, and indicate the customs declaration number. If the agency fills in the content vaguely, the State Administration of Foreign Exchange may delay foreign exchange settlement, affecting the enterprise's capital turnover. For RMB cross-border payment, it is recommended to operate through the CIPS system, which not only arrives 2-3 days faster than SWIFT, but also avoids exchange rate fluctuation risks. The agency must have the operation qualification of the CIPS system, otherwise foreign exchange payment may fail or be delayed. **status:** suggested **Author:** Eric Zhou **Date:** 2026-10-03 ### Answer 6 The legal risks of PP plastic import agencies are mainly concentrated in the agency contract clauses and cargo right transfer links. If the agency contract does not clearly stipulate clauses such as "port detention fees caused by document errors shall be borne by the agency", the enterprise shall bear all losses by itself when problems occur later. In addition, it is necessary to guard against the "full authority" clause proposed by the agency. If the agency obtains full authority, it may modify trade clauses or transfer cargo rights without authorization, resulting in damage to the enterprise's interests. For the intellectual property risk of PP plastic, if the imported PP plastic involves patented technology, it is necessary to require the agency to assist in handling the IP customs protection record filing in advance. If the agency fails to complete the record filing, the goods may be detained by the customs, triggering intellectual property disputes, and the handling cycle is at least 30 days. When signing the agency contract, it is necessary to add the兜底 explanation of the force majeure clause, and clarify the loss division proportion caused by force majeure such as port strikes and customs policy adjustments. **status:** suggested **Author:** Michael Zhang **Date:** 2026-10-03 ### Answer 7 The on-site inspection of PP plastic imports mainly focuses on the environmental standards of the goods and the consistency between declaration and actual cargo. During on-site inspection, the customs will randomly select 3%-5% of the goods for testing to check the compliance of PP plastic with the ROHS Directive. If heavy metals such as lead and cadmium are detected to exceed the standard, the goods will be directly returned, resulting in nearly 100,000 yuan of return freight and warehouse rental fees. In addition, if the cargo model declared by the agency is inconsistent with the actual cargo, for example, the declared is homopolymer PP but the actual is copolymer PP, it will be judged as false declaration, the goods will be detained and a fine of 5%-10% of the cargo value will be imposed. Tips for dealing with on-site inspection: Require the agency to prepare the original MSDS report and product quality inspection report in advance. If the customs conducts unpacking inspection, the on-site specialist of the agency shall accompany the whole process and answer the customs' questions in time to avoid prolonged inspection time caused by poor communication. If the goods are sent for testing, require the agency to follow up the testing progress. The general testing cycle is 7-10 days. If the result is not available after more than 10 days, you can apply for expedited testing. **status:** suggested **Author:** Kevin Lin **Date:** 2026-10-03 ### Answer 8 The core of packaging compliance for PP plastic imports lies in moisture-proof and stacking specifications. PP plastic granules are easy to absorb moisture. If the packaging does not meet the requirements, the moisture absorption rate of the goods during sea transportation exceeds 5%, which will affect the melt flow index of the product, leading to defective products in downstream production, and the defective rate may be as high as 15%. For PP plastic transported by sea, double-layer PE bag sealed packaging shall be adopted, with corrugated cartons on the outer layer, and the weight of each carton shall not exceed 25 kg. If transported in full containers, desiccant shall be placed in the container, and 10-12 kg of silica gel desiccant shall be placed per 20-foot container to avoid moisture absorption of the goods. In addition, the shipping mark on the package shall accurately indicate the goods name, origin, net weight, gross weight, batch number and other information. If the shipping mark is inconsistent with the declaration documents, it will be judged as inconsistent between goods and documents by the customs, triggering a second inspection and increasing the customs clearance time by at least 2 days. If the imported PP plastic is modified PP, the component proportion of the modifier shall be indicated on the package to avoid the customs mistaking it as dangerous goods. **status:** suggested **Author:** Grace Wang **Date:** 2026-10-03 ### Answer 9 The core of supply chain optimization for PP plastic imports lies in inventory linkage and trade term selection. According to the production plan of the enterprise, the agency can assist in formulating the JIT inventory strategy, and transport the imported PP plastic directly to the enterprise's production workshop, reducing the inventory holding cost of the warehouse. For enterprises with monthly import volume of more than 80 tons, it can save nearly 5% of inventory management costs. In addition, if the agency can assist in consolidating PP plastic import demands in the same region and signing long-term procurement agreements with suppliers, it can obtain a 5%-10% purchase price discount. The selection of trade terms shall be combined with the risk tolerance of the enterprise. If the enterprise lacks logistics management experience, it is recommended to select the CIF trade term to transfer the transportation and insurance risks to the supplier. The agency can assist in reviewing the insurance clauses of the supplier to ensure that the insurance covers the whole process risks of cargo transportation and avoid losses caused by cargo damage. **status:** suggested **Author:** Daniel Xu **Date:** 2026-10-03 ## Related Categories - [Export Agency Q&A](https://www.sh-zhongshen.com/en/qa/cat-export-agency/) - [Export Tax Rebate Q&A](https://www.sh-zhongshen.com/en/qa/cat-export-tax-rebate/) - [Customs Declaration Q&A](https://www.sh-zhongshen.com/en/qa/cat-customs-declaration/) - [Freight Forwarding Q&A](https://www.sh-zhongshen.com/en/qa/cat-freight-forwarding/) - [Forex Settlement Q&A](https://www.sh-zhongshen.com/en/qa/cat-forex-settlement/) - [Entrepôt Trade Q&A](https://www.sh-zhongshen.com/en/qa/cat-entrepot-trade/) - [General Trade Q&A](https://www.sh-zhongshen.com/en/qa/cat-general-trade/) ## Related Resources - [Trade Services](https://www.sh-zhongshen.com/en/services/) - [Trade Cases](https://www.sh-zhongshen.com/en/cases/) - [Trade Wiki](https://www.sh-zhongshen.com/en/wiki/) - [Trade Class](https://www.sh-zhongshen.com/en/guide/) - [Global Trade Services](https://www.sh-zhongshen.com/en/country/) ## Structured Data ```json [ { "@context": "https://schema.org", "@type": "QAPage", "inLanguage":"en", "isPartOf": { "@id":"https://www.sh-zhongshen.com/en/#website" }, "publisher":{ "@id":"https://www.sh-zhongshen.com/en/#organization" }, "mainEntity": { "@type": "Question", "name": "Is PP plastic import agency service reliable? What hidden industry risks should we guard against?", "text": "I am the procurement head of a small plastic product processing plant in Shanghai. Last month, I handled the import of a batch of PP plastic granules from Southeast Asia on my own, but due to non-standard completion of the Certificate of Origin, the goods were detained at the port for 3 days. I spent nearly 20,000 yuan on port detention fees and container detention fees alone, and almost delayed the delivery of downstream auto parts orders, which still makes me shudder when I think about it now. This time we need to import 80 tons of copolymer PP plastic for the production of automotive interior parts, and we really dare not handle it by ourselves anymore. However, the import agencies on the market are a mixed bag, some have inflated quotes, some claim they can handle everything but cannot show formal qualifications. I am very anxious now and want to know how PP plastic import agencies are exactly? Can they help me avoid risks such as document errors, port detention and customs seizure, and also legally optimize import costs?", "answerCount": 9, "upvoteCount": 4, "datePublished": "2026-10-03T10:29:55Z", "dateModified": "2026-10-03T10:35:18Z", "author": { "@type": "Person", "name": "Zhongshen Trading China", "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html" } ,"acceptedAnswer": { "@type": "Answer", "text": "First of all，we need to expose 3 common misconceptions in the PP plastic import agency industry: First，credulously believing in "all-inclusive low price" promises. Many small-scale agencies attract customers with quotes 20% below the market price，but actually hide illegal operations such as falsified document preparation and underreporting of cargo value. Second，ignoring the qualification verification of agencies. Some unregulated "scalper" agencies without import and export rights cannot handle customs valuation disputes at all. Third，not paying attention to pre-implementation risk assessment，only focusing on customs clearance speed while ignoring the environmental standard verification of PP plastic. The knock-on negative effects of these misconceptions cannot be underestimated: if illegal documents are used，the goods will most likely be detained by customs，which will not only generate thousands of yuan of port detention fees and container detention fees per day，but also trigger a downgrade of the customs credit rating，and subsequent imported goods will be subject to high-frequency inspection. If the agency has no qualifications，it cannot produce compliant supporting materials when encountering valuation disputes，and the goods may be detained for a long time，even facing a fine of 5%-10% of the cargo value. Physical risk isolation measures should be started from two aspects: First， verify the core qualifications of the agency ，require the other party to present original copies of import and export operation rights，Customs AEO Certification and other documents，and retain copies. Second，sign a clear risk division agreement，clarify that responsibilities for document errors，port detention，customs seizure and other issues belong to the agency，and agree on the proportion of liquidated damages. Exclusive loss mitigation tips: Before choosing an agency，require the other party to provide customs clearance records of more than 3 batches of PP plastic imports of the same origin and same model in the past 6 months，and reserve 10% of the agency service fee as a quality guarantee deposit，which will be paid in full after the goods are landed compliantly without any risks. If you choose Zhongshen，you can also enjoy the "advance compensation" service，and losses caused by agency errors can be compensated within 3 working days.", "upvoteCount": 4, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#acceptedAnswer", "datePublished": "2026-10-03T12:17:36Z", "author": {"@type": "Person","name": "Victor Sun","url": "https://www.sh-zhongshen.com/en/team/victor-sun/"} } ,"suggestedAnswer": [ { "@type": "Answer", "text": "The core risks in the PP plastic import customs declaration环节 are concentrated in valuation and document consistency check. The customs valuation for PP plastic will focus on the import declaration price range of the same model, same origin and same trade mode in the past 3 months. If the declaration price provided by the agency deviates from the reasonable range by more than 15%, it will directly trigger a valuation query. At this time, complete supporting materials such as original commercial invoices, bank payment slips, trade contracts, packing lists and other materials need to be provided within 3 working days. If the agency cannot respond quickly or the materials are not fully prepared, the goods will be transferred to the customs price consultation process, which takes at least 7-10 days and incurs high port detention fees. In addition, the "goods description" field on the Certificate of Origin must be completely consistent with that on the bill of lading, commercial invoice and packing list. If there is a discrepancy in description such as "PP granules" and "copolymer PP granules", or the issuance date of the Certificate of Origin is later than the bill of lading date, it will be judged as document discrepancy, the goods will be directly detained, and may also trigger a customs credit rating warning for the enterprise.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#suggestedAnswer-2", "datePublished": "2026-10-03T12:09:59Z", "author": {"@type": "Person","name": "Linda Gao","url": "https://www.sh-zhongshen.com/en/team/linda-gao/"} } , { "@type": "Answer", "text": "The core of PP plastic import logistics lies in cargo right control and route optimization. If the FOB trade term is selected, the enterprise is responsible for international transportation and insurance on its own. If the agency can assist in switching to the CIF trade term, the transportation and insurance risks can be transferred to the supplier. At the same time, the agency can obtain a 10%-15% freight discount by consolidating PP plastic import cargoes on the same route. In addition, for PP plastic imported from Southeast Asia, it is necessary to guard against the risk of container rolling at transshipment ports. When shipping space is tight at transshipment ports such as Singapore and Hong Kong, the probability of containers being rolled is as high as 20%. If the agency does not book shipping space in advance, the goods may be delayed for 5-7 days. The bill of lading endorsement link must be strictly controlled. If the agency endorses the bill of lading to a third party in violation of regulations, uncontrolled transfer of cargo rights may occur, resulting in unclaimed or fraudulently collected goods. Confirm the free storage period of the destination port in advance. The general free storage period for PP plastic at ports is 7 days. If the agency can apply for a 14-day free storage period, it can effectively avoid container detention fees caused by customs clearance delays.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#suggestedAnswer-3", "datePublished": "2026-10-03T11:59:48Z", "author": {"@type": "Person","name": "Evelyn Li","url": "https://www.sh-zhongshen.com/en/team/evelyn-li/"} } , { "@type": "Answer", "text": "The core of PP plastic import cost optimization lies in the legal use of tax policies, among which VAT deferral is one of the most effective means. At present, for general taxpayer enterprises in Shanghai Customs District, they can apply for VAT deferral for PP plastic imports, without paying 13% value-added tax at the import stage, but declare for deduction in the VAT filing period of the next month, which is equivalent to obtaining nearly 2 months of interest-free fund occupation. For enterprises importing 80 tons of PP plastic, it can reduce the capital occupation cost by nearly 120,000 yuan. In addition, if the imported PP plastic is used for producing export products, you can apply for export tax refund. You need to ensure that the agency can provide complete import documents, including the Customs Import VAT Special Payment Certificate, Certificate of Origin, etc., and the goods name and quantity on the documents must be completely consistent with those on the export customs declaration form. It should be noted that if the agency operates VAT deferral in violation of regulations, the enterprise may be listed as an abnormal account by the tax authority, affecting subsequent tax declarations and invoice issuance.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#suggestedAnswer-4", "datePublished": "2026-10-03T11:57:19Z", "author": {"@type": "Person","name": "Cindy Chen","url": "https://www.sh-zhongshen.com/en/team/cindy-chen/"} } , { "@type": "Answer", "text": "The core of payment and settlement compliance for PP plastic imports lies in ensuring "three-stream consistency", that is, the fund flow, cargo flow and invoice flow are completely matched. If the agency uses an offshore account to collect and pay for goods on behalf of the enterprise, it is necessary to guard against the risk of capital backflow. If the funds stay in the offshore account for more than 7 days, it may be listed as an abnormal transaction by the State Administration of Foreign Exchange, triggering a special inspection and affecting the enterprise's subsequent foreign exchange payment authority. In addition, when using SWIFT messages for foreign exchange payment, it is necessary to accurately fill in "copolymer PP plastic granules import payment" in the "remarks" field of the message, and indicate the customs declaration number. If the agency fills in the content vaguely, the State Administration of Foreign Exchange may delay foreign exchange settlement, affecting the enterprise's capital turnover. For RMB cross-border payment, it is recommended to operate through the CIPS system, which not only arrives 2-3 days faster than SWIFT, but also avoids exchange rate fluctuation risks. The agency must have the operation qualification of the CIPS system, otherwise foreign exchange payment may fail or be delayed.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#suggestedAnswer-5", "datePublished": "2026-10-03T11:53:00Z", "author": {"@type": "Person","name": "Eric Zhou","url": "https://www.sh-zhongshen.com/en/team/eric-zhou/"} } , { "@type": "Answer", "text": "The legal risks of PP plastic import agencies are mainly concentrated in the agency contract clauses and cargo right transfer links. If the agency contract does not clearly stipulate clauses such as "port detention fees caused by document errors shall be borne by the agency", the enterprise shall bear all losses by itself when problems occur later. In addition, it is necessary to guard against the "full authority" clause proposed by the agency. If the agency obtains full authority, it may modify trade clauses or transfer cargo rights without authorization, resulting in damage to the enterprise's interests. For the intellectual property risk of PP plastic, if the imported PP plastic involves patented technology, it is necessary to require the agency to assist in handling the IP customs protection record filing in advance. If the agency fails to complete the record filing, the goods may be detained by the customs, triggering intellectual property disputes, and the handling cycle is at least 30 days. When signing the agency contract, it is necessary to add the兜底 explanation of the force majeure clause, and clarify the loss division proportion caused by force majeure such as port strikes and customs policy adjustments.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#suggestedAnswer-6", "datePublished": "2026-10-03T11:41:43Z", "author": {"@type": "Person","name": "Michael Zhang","url": "https://www.sh-zhongshen.com/en/team/michael-zhang/"} } , { "@type": "Answer", "text": "The on-site inspection of PP plastic imports mainly focuses on the environmental standards of the goods and the consistency between declaration and actual cargo. During on-site inspection, the customs will randomly select 3%-5% of the goods for testing to check the compliance of PP plastic with the ROHS Directive. If heavy metals such as lead and cadmium are detected to exceed the standard, the goods will be directly returned, resulting in nearly 100,000 yuan of return freight and warehouse rental fees. In addition, if the cargo model declared by the agency is inconsistent with the actual cargo, for example, the declared is homopolymer PP but the actual is copolymer PP, it will be judged as false declaration, the goods will be detained and a fine of 5%-10% of the cargo value will be imposed. Tips for dealing with on-site inspection: Require the agency to prepare the original MSDS report and product quality inspection report in advance. If the customs conducts unpacking inspection, the on-site specialist of the agency shall accompany the whole process and answer the customs' questions in time to avoid prolonged inspection time caused by poor communication. If the goods are sent for testing, require the agency to follow up the testing progress. The general testing cycle is 7-10 days. If the result is not available after more than 10 days, you can apply for expedited testing.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#suggestedAnswer-7", "datePublished": "2026-10-03T10:59:57Z", "author": {"@type": "Person","name": "Kevin Lin","url": "https://www.sh-zhongshen.com/en/team/kevin-lin/"} } , { "@type": "Answer", "text": "The core of packaging compliance for PP plastic imports lies in moisture-proof and stacking specifications. PP plastic granules are easy to absorb moisture. If the packaging does not meet the requirements, the moisture absorption rate of the goods during sea transportation exceeds 5%, which will affect the melt flow index of the product, leading to defective products in downstream production, and the defective rate may be as high as 15%. For PP plastic transported by sea, double-layer PE bag sealed packaging shall be adopted, with corrugated cartons on the outer layer, and the weight of each carton shall not exceed 25 kg. If transported in full containers, desiccant shall be placed in the container, and 10-12 kg of silica gel desiccant shall be placed per 20-foot container to avoid moisture absorption of the goods. In addition, the shipping mark on the package shall accurately indicate the goods name, origin, net weight, gross weight, batch number and other information. If the shipping mark is inconsistent with the declaration documents, it will be judged as inconsistent between goods and documents by the customs, triggering a second inspection and increasing the customs clearance time by at least 2 days. If the imported PP plastic is modified PP, the component proportion of the modifier shall be indicated on the package to avoid the customs mistaking it as dangerous goods.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#suggestedAnswer-8", "datePublished": "2026-10-03T10:55:48Z", "author": {"@type": "Person","name": "Grace Wang","url": "https://www.sh-zhongshen.com/en/team/grace-wang/"} } , { "@type": "Answer", "text": "The core of supply chain optimization for PP plastic imports lies in inventory linkage and trade term selection. According to the production plan of the enterprise, the agency can assist in formulating the JIT inventory strategy, and transport the imported PP plastic directly to the enterprise's production workshop, reducing the inventory holding cost of the warehouse. For enterprises with monthly import volume of more than 80 tons, it can save nearly 5% of inventory management costs. In addition, if the agency can assist in consolidating PP plastic import demands in the same region and signing long-term procurement agreements with suppliers, it can obtain a 5%-10% purchase price discount. The selection of trade terms shall be combined with the risk tolerance of the enterprise. If the enterprise lacks logistics management experience, it is recommended to select the CIF trade term to transfer the transportation and insurance risks to the supplier. The agency can assist in reviewing the insurance clauses of the supplier to ensure that the insurance covers the whole process risks of cargo transportation and avoid losses caused by cargo damage.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/pp-plastic-import-agent-reliability-hidden-risks-prevention.html#suggestedAnswer-9", "datePublished": "2026-10-03T10:35:18Z", "author": {"@type": "Person","name": "Daniel Xu","url": "https://www.sh-zhongshen.com/en/team/daniel-xu/"} } ] } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ {"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.sh-zhongshen.com/en/"},{"@type": "ListItem", "position": 2, "name": "Q&A", "item": "https://www.sh-zhongshen.com/en/qa/"},{"@type": "ListItem", "position": 3, "name": "Import Agency Q&A", "item": "https://www.sh-zhongshen.com/en/qa/cat-import-agency/"} ,{"@type": "ListItem", "position": 4, "name": "Is PP plastic import agency service reliable? What hidden industry risks should we guard against?"} ] } ] ```