--- title: "How Long Does the Whole Process of Agency Import Customs Clearance for Plastic Pellets Take from Arrival to Release, and What Are the Core Influencing Factors?" description: "The purchasing head of a plastic products processing plant in Shanghai suffered production capacity loss and had his bonus deducted due to previous customs clearance delay，and now urgently needs to know the specific duration of agency import customs clearance for 20 containers of ABS plastic pellets. Through pre-arrival document pre-audit，advance declaration mode，and complete abnormal contingency connection，regular customs clearance can be released within 24-48 hours after arrival，and the durati..." url: "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html" language: "en" type: "Q&A" category: "Customs Declaration Q&A" datePublished: "2026-05-29" dateModified: "2026-05-29" brand: "Zhongshen Trading China" answerCount: 9 --- # How Long Does the Whole Process of Agency Import Customs Clearance for Plastic Pellets Take from Arrival to Release, and What Are the Core Influencing Factors? ## Question I am the purchasing head of a plastic products processing plant in Shanghai. I just ordered 20 containers of ABS plastic pellets from Southeast Asia last week, and the shipping company notified that the vessel will berth at Yangshan Port next Monday. Our two injection molding lines are waiting for this batch of materials to fulfill Mid-Autumn Festival orders. If material shortage exceeds 3 days, we will suffer 80,000 RMB in production capacity loss alone and lose long-term customers. The small agency I hired before for customs clearance delayed 12 days last time due to missing items in the documents, which got my monthly bonus deducted by my boss. Now I have switched to your Zhongshen, but I still feel very anxious. I want to ask how long it will take for this batch of plastic pellets to complete the whole agency import customs clearance process from arrival to release? How fast can it be released if all documents are complete? How much extra time will it take if customs inspection is required? Do you have any solution to ensure that the production schedule will not be delayed, so I won't take the blame again! ## Answers ### Answer 1 — Best Answer First of all，we will complete the **pre-arrival document pre-audit** 72 hours before the cargo arrives at the port. We focus on checking the accuracy of HS code classification (required to be accurate to 10 digits) and component proportion declaration (error shall not exceed 2%) in documents including MSDS，certificate of origin，packing list and invoice of plastic pellets. This is the core prerequisite to avoid subsequent price review objections or document rejection. If any problem is found，we will immediately assist you to correct it，ensuring that declaration can be triggered directly after arrival，and no 1-3 days delay will be caused by document defects. In terms of core node connection，we adopt the "advance declaration + two-step declaration" mode for Yangshan Port. We complete pre-declaration 24 hours before cargo arrival，and complete manifest verification and tax payment within 12 hours after arrival (we are directly connected to the customs tax system，adopt one-click withholding，no need to wait for manual account confirmation). If documents are complete and no abnormality exists，**regular customs clearance can be released within 24-48 hours after cargo arrival**. We have complete contingency plans for abnormal situations: in case of random inspection，we will coordinate on-site resources in advance to arrange unpacking first. Plastic pellets are general industrial raw materials，and inspection mainly focuses on appearance and component verification，which can usually be completed within 1-2 days，in case of price review objection，we will provide supporting documents such as the purchase and sale contract from the overseas original manufacturer and foreign payment receipt at the first time，which can usually be solved within 3-5 days，if sampling inspection is required，we can coordinate with our cooperative institution to issue the report urgently，and the duration can be compressed to within 3 days. In the final compliance implementation stage，we will simultaneously complete the push of customs electronic release order and container pickup reservation at the port area，ensuring that you can pick up the container and arrange delivery within 4 hours after release，there is no connection gap in the whole link，and it matches your production schedule to the greatest extent. **status:** accepted **Author:** Michael Zhang **Date:** 2026-05-29 ### Answer 2 The duration of plastic pellets import customs clearance is directly related to the accuracy of HS code classification. If incorrect classification triggers document rejection and re-declaration, it will add at least 3-5 days to the total duration. At present, customs classification for plastic pellets is strictly based on dimensions such as component proportion, processing technology and application. If the error between declared component proportion and actual value exceeds 2%, it will directly trigger price review objection. Under the advance declaration mode, documents must be submitted 24 hours before cargo arrival, and the manifest information must be 100% consistent with the declaration information, otherwise the declaration will be rejected by the system, leading to 1-2 days delay. For price review disputes, supporting documents such as purchase and sale contract from overseas original manufacturer, foreign payment receipt and cost breakdown must be prepared in advance to avoid extended duration caused by incomplete materials. **status:** suggested **Author:** Evelyn Li **Date:** 2026-05-29 ### Answer 3 After plastic pellets arrive at the port, the duration of manifest verification directly affects the start time of customs clearance. If the manifest transmission by the shipping company is delayed, customs clearance declaration cannot be started, which will cause at least 1 day delay. The free storage period for ordinary containers at Yangshan Port is 7 days. If customs clearance duration exceeds the free storage period, a container detention fee of about 100 RMB per container per day will be charged. Choosing a direct voyage vessel instead of a transit vessel can reduce the waiting time for manifest transmission after cargo arrival, and the manifest of transit vessels is usually transmitted 1-2 days later. In addition, reserving container pickup with the port area in advance can avoid adding 1-2 days of duration caused by container pickup queuing, especially in peak season (such as September to October), container pickup reservation must be completed 24 hours in advance. **status:** suggested **Author:** Andy Guo **Date:** 2026-05-29 ### Answer 4 Adopting VAT deferred declaration mode can shorten customs clearance duration, because release can be completed without waiting for tax payment to arrive in the account. Compared with the conventional tax payment mode, it can save 1-2 days of waiting time for account arrival. However, VAT deferral needs to meet specific conditions: the enterprise must have import and export operation right, has completed VAT deferral filing with customs, and ensures that the imported plastic pellets are used for production and processing rather than resale. If VAT deferral filing is not completed in advance, the filing process must be completed 1-2 days before customs clearance, otherwise this mode cannot be enjoyed. In addition, under the VAT deferral mode, tax payment must be completed within the VAT declaration period of the next month. Late payment will incur late fee, but will not affect immediate customs clearance release. **status:** suggested **Author:** Eric Zhou **Date:** 2026-05-29 ### Answer 5 The duration of plastic pellets import customs clearance is indirectly related to the compliance of foreign payment. If there is any abnormality in the foreign payment process, customs may initiate an investigation, adding 3-5 days of duration. Currently, the CIPS RMB cross-border payment mode can realize real-time transmission of foreign payment information, and customs can directly obtain the foreign payment certificate without manual submission of paper materials, saving 1-2 days of material review time. If paying through an offshore account, it is necessary to ensure that the transaction records of the offshore account are clear and consistent with the amount and time in the purchase contract, otherwise customs will require supplementary materials. In addition, completing the collection and payment filing in advance can avoid delaying customs clearance time due to the filing process, and the filing must be completed 3 days before cargo arrival. **status:** suggested **Author:** Daniel Xu **Date:** 2026-05-29 ### Answer 6 If plastic pellets involve brand authorization, the brand authorization letter must be prepared in advance. If the authorization letter is not submitted, customs may initiate intellectual property verification, adding 3-7 days of duration. The authenticity of the certificate of origin directly affects the review time of tariff reduction. If the certificate of origin is forged or has inconsistent information, the goods will be detained by customs, which takes at least 7-10 days. In addition, information such as component, specification and quantity of the goods must be clearly stated in the purchase contract and consistent with the declaration information. If the contract information is inconsistent with the declaration information, customs will initiate authenticity verification, adding 2-3 days of duration. For shipment delay caused by force majeure, the delay certificate issued by the shipping company must be prepared in advance to avoid triggering verification due to inconsistent arrival time. **status:** suggested **Author:** Lucas Liu **Date:** 2026-05-29 ### Answer 7 When plastic pellets import customs clearance is subject to inspection: if it is machine inspection, it can usually be completed within 4-8 hours without unpacking; if it is unpacking inspection, it needs to wait for on-site customs officers to arrive, which can usually be completed within 1-2 days. If sampling inspection is required, the conventional duration is 7-10 days, but if you schedule an urgent inspection with the cooperative third-party testing institution in advance, the duration can be compressed to 3-5 days. It is necessary to ensure that the container seal is intact during inspection. If the seal is damaged, it will trigger cargo integrity verification, adding 1-2 days of duration. In addition, preparing documents such as MSDS and component test report in advance can speed up the inspection review and avoid extended duration caused by incomplete materials. **status:** suggested **Author:** Victor Sun **Date:** 2026-05-29 ### Answer 8 The packaging compliance of plastic pellets indirectly affects customs clearance duration. If the packaging does not meet customs requirements, it will trigger packaging rectification, adding 1-2 days of duration. Customs requires that the packaging of plastic pellets must have moisture-proof and leak-proof functions. If the packaging materials used do not meet the requirements, you will be required to replace the packaging. The preparation of MSDS must accurately reflect information such as components and hazards of plastic pellets. If MSDS is not prepared in a standard manner, customs will require re-preparation, adding 2-3 days of duration. In addition, the shipping mark on the packaging must be consistent with the packing list information declared. If the shipping mark information is inconsistent, it will trigger verification, adding 1-2 days of duration. Conducting compliance inspection on packaging in advance can avoid delaying customs clearance time due to packaging problems. **status:** suggested **Author:** Linda Gao **Date:** 2026-05-29 ### Answer 9 When adopting FOB trade term, the importer is responsible for logistics and customs clearance by themselves. If the connection between logistics and customs clearance is not smooth, it will add 1-3 days of duration; when adopting CIF trade term, the seller is responsible for logistics, the coordination of customs clearance connection is better, which can reduce connection gaps. Under the inventory linkage strategy, starting customs clearance declaration preparation 7-10 days in advance can ensure that customs clearance starts immediately after cargo arrival, avoiding delay caused by insufficient preparation. In peak season (such as September to October), customs declaration resources need to be reserved 15 days in advance, because customs brokers have a large number of orders at this time, temporary reservation will add 1-2 days of waiting time. In addition, adjusting the customs clearance mode according to the production schedule, such as adopting the advance declaration mode, can ensure immediate release after cargo arrival and match the time nodes of the production plan. **status:** suggested **Author:** Kevin Lin **Date:** 2026-05-29 ## Related Categories - [Import Agency Q&A](https://www.sh-zhongshen.com/en/qa/cat-import-agency/) - [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/) - [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": "How Long Does the Whole Process of Agency Import Customs Clearance for Plastic Pellets Take from Arrival to Release, and What Are the Core Influencing Factors?", "text": "I am the purchasing head of a plastic products processing plant in Shanghai. I just ordered 20 containers of ABS plastic pellets from Southeast Asia last week, and the shipping company notified that the vessel will berth at Yangshan Port next Monday. Our two injection molding lines are waiting for this batch of materials to fulfill Mid-Autumn Festival orders. If material shortage exceeds 3 days, we will suffer 80,000 RMB in production capacity loss alone and lose long-term customers. The small agency I hired before for customs clearance delayed 12 days last time due to missing items in the documents, which got my monthly bonus deducted by my boss. Now I have switched to your Zhongshen, but I still feel very anxious. I want to ask how long it will take for this batch of plastic pellets to complete the whole agency import customs clearance process from arrival to release? How fast can it be released if all documents are complete? How much extra time will it take if customs inspection is required? Do you have any solution to ensure that the production schedule will not be delayed, so I won't take the blame again!", "answerCount": 9, "upvoteCount": 7, "datePublished": "2026-05-29T11:41:21Z", "dateModified": "2026-05-29T11:46:01Z", "author": { "@type": "Person", "name": "Zhongshen Trading China", "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html" } ,"acceptedAnswer": { "@type": "Answer", "text": "First of all，we will complete the pre-arrival document pre-audit 72 hours before the cargo arrives at the port. We focus on checking the accuracy of HS code classification (required to be accurate to 10 digits) and component proportion declaration (error shall not exceed 2%) in documents including MSDS，certificate of origin，packing list and invoice of plastic pellets. This is the core prerequisite to avoid subsequent price review objections or document rejection. If any problem is found，we will immediately assist you to correct it，ensuring that declaration can be triggered directly after arrival，and no 1-3 days delay will be caused by document defects. In terms of core node connection，we adopt the "advance declaration + two-step declaration" mode for Yangshan Port. We complete pre-declaration 24 hours before cargo arrival，and complete manifest verification and tax payment within 12 hours after arrival (we are directly connected to the customs tax system，adopt one-click withholding，no need to wait for manual account confirmation). If documents are complete and no abnormality exists， regular customs clearance can be released within 24-48 hours after cargo arrival . We have complete contingency plans for abnormal situations: in case of random inspection，we will coordinate on-site resources in advance to arrange unpacking first. Plastic pellets are general industrial raw materials，and inspection mainly focuses on appearance and component verification，which can usually be completed within 1-2 days，in case of price review objection，we will provide supporting documents such as the purchase and sale contract from the overseas original manufacturer and foreign payment receipt at the first time，which can usually be solved within 3-5 days，if sampling inspection is required，we can coordinate with our cooperative institution to issue the report urgently，and the duration can be compressed to within 3 days. In the final compliance implementation stage，we will simultaneously complete the push of customs electronic release order and container pickup reservation at the port area，ensuring that you can pick up the container and arrange delivery within 4 hours after release，there is no connection gap in the whole link，and it matches your production schedule to the greatest extent.", "upvoteCount": 7, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#acceptedAnswer", "datePublished": "2026-05-29T13:30:41Z", "author": {"@type": "Person","name": "Michael Zhang","url": "https://www.sh-zhongshen.com/en/team/michael-zhang/"} } ,"suggestedAnswer": [ { "@type": "Answer", "text": "The duration of plastic pellets import customs clearance is directly related to the accuracy of HS code classification. If incorrect classification triggers document rejection and re-declaration, it will add at least 3-5 days to the total duration. At present, customs classification for plastic pellets is strictly based on dimensions such as component proportion, processing technology and application. If the error between declared component proportion and actual value exceeds 2%, it will directly trigger price review objection. Under the advance declaration mode, documents must be submitted 24 hours before cargo arrival, and the manifest information must be 100% consistent with the declaration information, otherwise the declaration will be rejected by the system, leading to 1-2 days delay. For price review disputes, supporting documents such as purchase and sale contract from overseas original manufacturer, foreign payment receipt and cost breakdown must be prepared in advance to avoid extended duration caused by incomplete materials.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#suggestedAnswer-2", "datePublished": "2026-05-29T13:16:59Z", "author": {"@type": "Person","name": "Evelyn Li","url": "https://www.sh-zhongshen.com/en/team/evelyn-li/"} } , { "@type": "Answer", "text": "After plastic pellets arrive at the port, the duration of manifest verification directly affects the start time of customs clearance. If the manifest transmission by the shipping company is delayed, customs clearance declaration cannot be started, which will cause at least 1 day delay. The free storage period for ordinary containers at Yangshan Port is 7 days. If customs clearance duration exceeds the free storage period, a container detention fee of about 100 RMB per container per day will be charged. Choosing a direct voyage vessel instead of a transit vessel can reduce the waiting time for manifest transmission after cargo arrival, and the manifest of transit vessels is usually transmitted 1-2 days later. In addition, reserving container pickup with the port area in advance can avoid adding 1-2 days of duration caused by container pickup queuing, especially in peak season (such as September to October), container pickup reservation must be completed 24 hours in advance.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#suggestedAnswer-3", "datePublished": "2026-05-29T12:56:50Z", "author": {"@type": "Person","name": "Andy Guo","url": "https://www.sh-zhongshen.com/en/team/andy-guo/"} } , { "@type": "Answer", "text": "Adopting VAT deferred declaration mode can shorten customs clearance duration, because release can be completed without waiting for tax payment to arrive in the account. Compared with the conventional tax payment mode, it can save 1-2 days of waiting time for account arrival. However, VAT deferral needs to meet specific conditions: the enterprise must have import and export operation right, has completed VAT deferral filing with customs, and ensures that the imported plastic pellets are used for production and processing rather than resale. If VAT deferral filing is not completed in advance, the filing process must be completed 1-2 days before customs clearance, otherwise this mode cannot be enjoyed. In addition, under the VAT deferral mode, tax payment must be completed within the VAT declaration period of the next month. Late payment will incur late fee, but will not affect immediate customs clearance release.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#suggestedAnswer-4", "datePublished": "2026-05-29T12:38:49Z", "author": {"@type": "Person","name": "Eric Zhou","url": "https://www.sh-zhongshen.com/en/team/eric-zhou/"} } , { "@type": "Answer", "text": "The duration of plastic pellets import customs clearance is indirectly related to the compliance of foreign payment. If there is any abnormality in the foreign payment process, customs may initiate an investigation, adding 3-5 days of duration. Currently, the CIPS RMB cross-border payment mode can realize real-time transmission of foreign payment information, and customs can directly obtain the foreign payment certificate without manual submission of paper materials, saving 1-2 days of material review time. If paying through an offshore account, it is necessary to ensure that the transaction records of the offshore account are clear and consistent with the amount and time in the purchase contract, otherwise customs will require supplementary materials. In addition, completing the collection and payment filing in advance can avoid delaying customs clearance time due to the filing process, and the filing must be completed 3 days before cargo arrival.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#suggestedAnswer-5", "datePublished": "2026-05-29T12:36:27Z", "author": {"@type": "Person","name": "Daniel Xu","url": "https://www.sh-zhongshen.com/en/team/daniel-xu/"} } , { "@type": "Answer", "text": "If plastic pellets involve brand authorization, the brand authorization letter must be prepared in advance. If the authorization letter is not submitted, customs may initiate intellectual property verification, adding 3-7 days of duration. The authenticity of the certificate of origin directly affects the review time of tariff reduction. If the certificate of origin is forged or has inconsistent information, the goods will be detained by customs, which takes at least 7-10 days. In addition, information such as component, specification and quantity of the goods must be clearly stated in the purchase contract and consistent with the declaration information. If the contract information is inconsistent with the declaration information, customs will initiate authenticity verification, adding 2-3 days of duration. For shipment delay caused by force majeure, the delay certificate issued by the shipping company must be prepared in advance to avoid triggering verification due to inconsistent arrival time.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#suggestedAnswer-6", "datePublished": "2026-05-29T12:04:15Z", "author": {"@type": "Person","name": "Lucas Liu","url": "https://www.sh-zhongshen.com/en/team/lucas-liu/"} } , { "@type": "Answer", "text": "When plastic pellets import customs clearance is subject to inspection: if it is machine inspection, it can usually be completed within 4-8 hours without unpacking; if it is unpacking inspection, it needs to wait for on-site customs officers to arrive, which can usually be completed within 1-2 days. If sampling inspection is required, the conventional duration is 7-10 days, but if you schedule an urgent inspection with the cooperative third-party testing institution in advance, the duration can be compressed to 3-5 days. It is necessary to ensure that the container seal is intact during inspection. If the seal is damaged, it will trigger cargo integrity verification, adding 1-2 days of duration. In addition, preparing documents such as MSDS and component test report in advance can speed up the inspection review and avoid extended duration caused by incomplete materials.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#suggestedAnswer-7", "datePublished": "2026-05-29T12:00:31Z", "author": {"@type": "Person","name": "Victor Sun","url": "https://www.sh-zhongshen.com/en/team/victor-sun/"} } , { "@type": "Answer", "text": "The packaging compliance of plastic pellets indirectly affects customs clearance duration. If the packaging does not meet customs requirements, it will trigger packaging rectification, adding 1-2 days of duration. Customs requires that the packaging of plastic pellets must have moisture-proof and leak-proof functions. If the packaging materials used do not meet the requirements, you will be required to replace the packaging. The preparation of MSDS must accurately reflect information such as components and hazards of plastic pellets. If MSDS is not prepared in a standard manner, customs will require re-preparation, adding 2-3 days of duration. In addition, the shipping mark on the packaging must be consistent with the packing list information declared. If the shipping mark information is inconsistent, it will trigger verification, adding 1-2 days of duration. Conducting compliance inspection on packaging in advance can avoid delaying customs clearance time due to packaging problems.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#suggestedAnswer-8", "datePublished": "2026-05-29T11:47:24Z", "author": {"@type": "Person","name": "Linda Gao","url": "https://www.sh-zhongshen.com/en/team/linda-gao/"} } , { "@type": "Answer", "text": "When adopting FOB trade term, the importer is responsible for logistics and customs clearance by themselves. If the connection between logistics and customs clearance is not smooth, it will add 1-3 days of duration; when adopting CIF trade term, the seller is responsible for logistics, the coordination of customs clearance connection is better, which can reduce connection gaps. Under the inventory linkage strategy, starting customs clearance declaration preparation 7-10 days in advance can ensure that customs clearance starts immediately after cargo arrival, avoiding delay caused by insufficient preparation. In peak season (such as September to October), customs declaration resources need to be reserved 15 days in advance, because customs brokers have a large number of orders at this time, temporary reservation will add 1-2 days of waiting time. In addition, adjusting the customs clearance mode according to the production schedule, such as adopting the advance declaration mode, can ensure immediate release after cargo arrival and match the time nodes of the production plan.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/plastics-pellet-import-customs-clearance-duration-key-influencing-factors.html#suggestedAnswer-9", "datePublished": "2026-05-29T11:46:01Z", "author": {"@type": "Person","name": "Kevin Lin","url": "https://www.sh-zhongshen.com/en/team/kevin-lin/"} } ] } }, { "@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": "Customs Declaration Q&A", "item": "https://www.sh-zhongshen.com/en/qa/cat-customs-declaration/"} ,{"@type": "ListItem", "position": 4, "name": "How Long Does the Whole Process of Agency Import Customs Clearance for Plastic Pellets Take from Arrival to Release, and What Are the Core Influencing Factors?"} ] } ] ```