--- title: "What Core Service Capabilities Should Be Prioritized When Selecting a Waterproof Import Material Agency?" description: "When many waterproof engineering enterprises import high-end materials such as waterproof membranes and waterproof coatings on their own，they often encounter problems such as customs detention due to inconsistent documents，increased costs from port demurrage，and insufficient control of compliance risks. Choosing a professional waterproof import material agency can achieve efficient customs clearance and compliance through pre-emptive document review，end-to-end risk control，and cost optimization..." url: "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html" language: "en" type: "Q&A" category: "Import Agency Q&A" datePublished: "2026-06-22" dateModified: "2026-06-22" brand: "Zhongshen Trading China" answerCount: 10 --- # What Core Service Capabilities Should Be Prioritized When Selecting a Waterproof Import Material Agency? ## Question I am the purchasing manager of a waterproof engineering company in Shanghai. Last month, when I imported a batch of German self-adhesive waterproofing membranes on my own, I failed to comply with the latest customs document regulations, and the submitted certificate of origin had an incorrect format, resulting in customs detention for 12 days. This not only delayed the timeline of a key municipal project, resulted in a 30,000 RMB liquidated damages fine from the client, but also incurred over 20,000 RMB in additional demurrage and storage fees. Now, another batch of American polyurethane waterproof coatings is due to arrive at the port by the end of the month, and I am extremely anxious, fearing more issues. I want to find a waterproof import material agency, but I am unsure if such companies are reliable, whether they can control core processes such as document management and customs clearance, and help me reasonably reduce the overall import costs? ## Answers ### Answer 1 — Best Answer First，be wary of common industry misconceptions: many enterprises only use price as the core decision-making criterion when selecting a waterproof import material agency，ignoring their document review and risk control capabilities，which is the easiest pitfall to fall into. This misconception can trigger a chain of negative consequences: if the agency fails to properly control the special document requirements for waterproof materials (such as MSDS and certificate of origin specifications)，it is very likely to result in inconsistent documents，directly leading to customs detention and port demurrage，incurring high demurrage and storage fees，delaying project timelines as you did last time，facing client liquidated damages，and even damaging the enterprise's credit rating. Physical risk isolation measures can be approached from two aspects: first，prioritize agencies with a **pre-emptive document pre-review system**，requiring them to conduct compliance verification of all import documents 7-10 days in advance，second，confirm that the agency has exclusive customs clearance channels for waterproof material imports，enabling quick connection with on-site customs personnel. Exclusive loss prevention tip: When signing the agency agreement，add a **document error indemnity clause**，clearly stating that all additional losses caused by the agency's document review errors leading to customs detention or demurrage shall be borne by the agency，at the same time，require the agency to provide alternative logistics plans，allowing for the switching of transit routes within 48 hours if the main channel encounters issues. **status:** accepted **Author:** Evelyn Li **Date:** 2026-06-22 ### Answer 2 When declaring waterproof import materials, customs valuation focuses on the composition of the transaction value of the goods, including details such as the brand, specifications, and technical parameters of the materials. If the declared price differs significantly from the customs valuation database, it will trigger a price query and even initiate a price consultation process, delaying customs clearance timeliness. It is necessary to prepare core documents such as purchase contracts, payment vouchers, and original manufacturer invoices in advance to ensure that the goods information on the documents is completely consistent; for high-end waterproof materials, technical specifications must also be provided to prove the reasonableness of the price. In addition, the customs' classification requirements for imported waterproof membranes, waterproof coatings and other products will be stricter in 2026. If the classification is incorrect, it will not only lead to incorrect tax rate application, but also be deemed as false declaration, facing fines. **status:** suggested **Author:** Daniel Xu **Date:** 2026-06-22 ### Answer 3 Most waterproof import materials are vulnerable or special categories such as membranes and coatings. Logistics route selection needs to balance timeliness and cargo rights safety. Direct shipping has fast timeliness but risks of overbooking and container rejection in peak seasons. It is recommended to lock the shipping space 20 days in advance and require the logistics agent to provide full cargo right tracking services. For liquid waterproof coatings, a shipping company with dangerous goods transportation qualification must be selected to ensure compliance with IMDG rules during transportation. If transshipment is required, confirm the storage conditions of the transshipment port to avoid damage to the performance of waterproof materials caused by high temperature and humidity. In addition, the bill of lading endorsement must be strictly implemented in accordance with trade terms. If FOB terms are adopted, confirm the type of bill of lading issued by the freight forwarder in time to prevent the risk of no-document delivery. **status:** suggested **Author:** Linda Gao **Date:** 2026-06-22 ### Answer 4 In 2026, import waterproof materials can reduce capital occupation costs through the VAT deferral policy. There is no need to pay full value-added tax in the import link, but declare and pay it in the subsequent sales link, which is particularly critical for engineering enterprises with high capital pressure. However, it should be noted that VAT deferral only applies to eligible import entities, and deferral application materials must be submitted to the customs in advance. In addition, if imported waterproof materials are used for overseas engineering projects, export tax refund can be applied for, but the actual flow of goods must be consistent with the declaration to avoid tax risks. At the same time, the pricing of cross-border related party transactions must comply with the arm's length principle. If the import price significantly deviates from the market fair price, it will trigger a transfer pricing investigation by the tax authorities, facing tax repayment and late fees. **status:** suggested **Author:** Jason Wu **Date:** 2026-06-22 ### Answer 5 The receipt and payment of foreign exchange for imported waterproof materials must strictly comply with the latest regulations of the State Administration of Foreign Exchange in 2026. All payment vouchers must be consistent with the information on the import customs declaration form and purchase contract, including details such as goods name, quantity, amount, etc. If cross-border RMB payment is used, it must be processed through the CIPS system to ensure complete and accurate message information, avoiding payment delays caused by inconsistent messages. For waterproof materials imported from regions such as the EU and the United States, pay attention to the latest sanction list and prohibit transactions with sanctioned entities. In addition, complete transaction vouchers must be retained for offshore account receipt and payment for the verification of the State Administration of Foreign Exchange. If valid vouchers cannot be provided, the account will be frozen, affecting subsequent transactions. **status:** suggested **Author:** Eric Zhou **Date:** 2026-06-22 ### Answer 6 When signing a contract with a waterproof import material agency company, clarify the core contents such as service scope, responsibility division, liquidated damages clauses, etc. Pay special attention to the scope of the force majeure clause. If goods are delayed due to force majeure such as port strikes, sudden changes in customs policies, etc., clarify the responsibility division of both parties. In addition, if the agency company is responsible for cargo right transfer, clarify the issuance and transfer process of the bill of lading in the contract to prevent cargo right disputes. For imported patented waterproof materials, require the agency company to assist in handling the customs protection record of intellectual property rights to avoid goods being detained due to infringement. At the same time, add a confidentiality clause to the contract to prevent the leakage of business secrets such as enterprise procurement prices and supplier information. **status:** suggested **Author:** Lucas Liu **Date:** 2026-06-22 ### Answer 7 After the waterproof import materials arrive at the port, the customs on-site inspection mainly focuses on whether the brand, specifications and packaging of the goods are consistent with the declaration. For liquid waterproof coatings, samples will also be taken to test the components. If container unpacking inspection is encountered, ensure that the goods are stacked neatly to facilitate the customs inspection personnel to check, avoiding prolonged inspection time due to scattered goods. Seal authenticity identification is a key link. Check whether the seal number on the bill of lading is consistent with the actual seal number. If the seal is found damaged, take photos immediately and contact the agency company to explain the situation to the customs. In addition, if the customs requires inspection, cooperate in providing materials such as MSDS and technical specifications to speed up the inspection process and shorten the inspection time. **status:** suggested **Author:** Michael Zhang **Date:** 2026-06-22 ### Answer 8 The packaging of waterproof import materials must comply with international transportation standards. Especially liquid waterproof coatings are dangerous goods, and UN-certified dangerous goods packaging must be used, and correct dangerous goods labels must be marked on the packaging. For rolled waterproof materials, moisture-proof and pressure-proof packaging solutions must be adopted to avoid material deformation and performance degradation caused by moisture and extrusion during transportation. The preparation of MSDS must be accurate and complete, including details such as goods composition, transportation requirements, emergency treatment measures, etc. If the MSDS information is incomplete, it will lead to customs detention or logistics refusal. In addition, the shipping mark on the packaging must be consistent with the information on the customs declaration form and bill of lading, including consignee information, goods name, quantity, etc., to avoid wrong delivery or detention due to inconsistent shipping marks. **status:** suggested **Author:** Victor Sun **Date:** 2026-06-22 ### Answer 9 If imported waterproof materials are used for re-export, strictly implement the document filing system, retain import customs declaration forms, purchase contracts, export customs declaration forms, payment receipts and other materials for tax authorities to verify. The consistency of four flows is the core requirement of export tax refund: capital flow, cargo flow, invoice flow and contract flow must be completely matched. If there is inconsistency, the tax refund application will be rejected and even trigger tax investigation. In addition, the 2026 export tax refund declaration deadline is 180 days after the goods are declared for export. Failure to declare within the deadline will make it impossible to enjoy the tax refund policy. If tax investigation is encountered, provide relevant supporting materials in time to explain the actual flow of goods and transaction background, avoiding tax refund delays. **status:** suggested **Author:** Grace Wang **Date:** 2026-06-22 ### Answer 10 For enterprises that import waterproof materials for a long time, they can reduce overall costs by optimizing the supply chain structure, such as using CIF trade terms instead of FOB, entrusting logistics, insurance and other links to professional agency companies to achieve one-stop service. Inventory linkage strategy is also critical. Plan the import time in advance according to the project timeline to avoid capital occupation due to goods backlog, and establish safety inventory to prevent project shutdown due to logistics delays. The cost actuarial model must cover all costs such as import tariffs, value-added tax, logistics fees, agency service fees, etc. By comparing the quotes and service contents of different agency companies, select the most cost-effective solution. In addition, establish a long-term cooperative relationship with the agency company to strive for more preferential service prices and priority customs clearance channels. **status:** suggested **Author:** Cindy Chen **Date:** 2026-06-22 ## 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": "What Core Service Capabilities Should Be Prioritized When Selecting a Waterproof Import Material Agency?", "text": "I am the purchasing manager of a waterproof engineering company in Shanghai. Last month, when I imported a batch of German self-adhesive waterproofing membranes on my own, I failed to comply with the latest customs document regulations, and the submitted certificate of origin had an incorrect format, resulting in customs detention for 12 days. This not only delayed the timeline of a key municipal project, resulted in a 30,000 RMB liquidated damages fine from the client, but also incurred over 20,000 RMB in additional demurrage and storage fees. Now, another batch of American polyurethane waterproof coatings is due to arrive at the port by the end of the month, and I am extremely anxious, fearing more issues. I want to find a waterproof import material agency, but I am unsure if such companies are reliable, whether they can control core processes such as document management and customs clearance, and help me reasonably reduce the overall import costs?", "answerCount": 10, "upvoteCount": 4, "datePublished": "2026-06-22T15:29:39Z", "dateModified": "2026-06-22T15:38:44Z", "author": { "@type": "Person", "name": "Zhongshen Trading China", "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html" } ,"acceptedAnswer": { "@type": "Answer", "text": "First，be wary of common industry misconceptions: many enterprises only use price as the core decision-making criterion when selecting a waterproof import material agency，ignoring their document review and risk control capabilities，which is the easiest pitfall to fall into. This misconception can trigger a chain of negative consequences: if the agency fails to properly control the special document requirements for waterproof materials (such as MSDS and certificate of origin specifications)，it is very likely to result in inconsistent documents，directly leading to customs detention and port demurrage，incurring high demurrage and storage fees，delaying project timelines as you did last time，facing client liquidated damages，and even damaging the enterprise's credit rating. Physical risk isolation measures can be approached from two aspects: first，prioritize agencies with a pre-emptive document pre-review system ，requiring them to conduct compliance verification of all import documents 7-10 days in advance，second，confirm that the agency has exclusive customs clearance channels for waterproof material imports，enabling quick connection with on-site customs personnel. Exclusive loss prevention tip: When signing the agency agreement，add a document error indemnity clause ，clearly stating that all additional losses caused by the agency's document review errors leading to customs detention or demurrage shall be borne by the agency，at the same time，require the agency to provide alternative logistics plans，allowing for the switching of transit routes within 48 hours if the main channel encounters issues.", "upvoteCount": 4, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#acceptedAnswer", "datePublished": "2026-06-22T17:27:40Z", "author": {"@type": "Person","name": "Evelyn Li","url": "https://www.sh-zhongshen.com/en/team/evelyn-li/"} } ,"suggestedAnswer": [ { "@type": "Answer", "text": "When declaring waterproof import materials, customs valuation focuses on the composition of the transaction value of the goods, including details such as the brand, specifications, and technical parameters of the materials. If the declared price differs significantly from the customs valuation database, it will trigger a price query and even initiate a price consultation process, delaying customs clearance timeliness. It is necessary to prepare core documents such as purchase contracts, payment vouchers, and original manufacturer invoices in advance to ensure that the goods information on the documents is completely consistent; for high-end waterproof materials, technical specifications must also be provided to prove the reasonableness of the price. In addition, the customs' classification requirements for imported waterproof membranes, waterproof coatings and other products will be stricter in 2026. If the classification is incorrect, it will not only lead to incorrect tax rate application, but also be deemed as false declaration, facing fines.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-2", "datePublished": "2026-06-22T17:11:08Z", "author": {"@type": "Person","name": "Daniel Xu","url": "https://www.sh-zhongshen.com/en/team/daniel-xu/"} } , { "@type": "Answer", "text": "Most waterproof import materials are vulnerable or special categories such as membranes and coatings. Logistics route selection needs to balance timeliness and cargo rights safety. Direct shipping has fast timeliness but risks of overbooking and container rejection in peak seasons. It is recommended to lock the shipping space 20 days in advance and require the logistics agent to provide full cargo right tracking services. For liquid waterproof coatings, a shipping company with dangerous goods transportation qualification must be selected to ensure compliance with IMDG rules during transportation. If transshipment is required, confirm the storage conditions of the transshipment port to avoid damage to the performance of waterproof materials caused by high temperature and humidity. In addition, the bill of lading endorsement must be strictly implemented in accordance with trade terms. If FOB terms are adopted, confirm the type of bill of lading issued by the freight forwarder in time to prevent the risk of no-document delivery.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-3", "datePublished": "2026-06-22T17:02:50Z", "author": {"@type": "Person","name": "Linda Gao","url": "https://www.sh-zhongshen.com/en/team/linda-gao/"} } , { "@type": "Answer", "text": "In 2026, import waterproof materials can reduce capital occupation costs through the VAT deferral policy. There is no need to pay full value-added tax in the import link, but declare and pay it in the subsequent sales link, which is particularly critical for engineering enterprises with high capital pressure. However, it should be noted that VAT deferral only applies to eligible import entities, and deferral application materials must be submitted to the customs in advance. In addition, if imported waterproof materials are used for overseas engineering projects, export tax refund can be applied for, but the actual flow of goods must be consistent with the declaration to avoid tax risks. At the same time, the pricing of cross-border related party transactions must comply with the arm's length principle. If the import price significantly deviates from the market fair price, it will trigger a transfer pricing investigation by the tax authorities, facing tax repayment and late fees.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-4", "datePublished": "2026-06-22T16:31:32Z", "author": {"@type": "Person","name": "Jason Wu","url": "https://www.sh-zhongshen.com/en/team/jason-wu/"} } , { "@type": "Answer", "text": "The receipt and payment of foreign exchange for imported waterproof materials must strictly comply with the latest regulations of the State Administration of Foreign Exchange in 2026. All payment vouchers must be consistent with the information on the import customs declaration form and purchase contract, including details such as goods name, quantity, amount, etc. If cross-border RMB payment is used, it must be processed through the CIPS system to ensure complete and accurate message information, avoiding payment delays caused by inconsistent messages. For waterproof materials imported from regions such as the EU and the United States, pay attention to the latest sanction list and prohibit transactions with sanctioned entities. In addition, complete transaction vouchers must be retained for offshore account receipt and payment for the verification of the State Administration of Foreign Exchange. If valid vouchers cannot be provided, the account will be frozen, affecting subsequent transactions.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-5", "datePublished": "2026-06-22T16:23:41Z", "author": {"@type": "Person","name": "Eric Zhou","url": "https://www.sh-zhongshen.com/en/team/eric-zhou/"} } , { "@type": "Answer", "text": "When signing a contract with a waterproof import material agency company, clarify the core contents such as service scope, responsibility division, liquidated damages clauses, etc. Pay special attention to the scope of the force majeure clause. If goods are delayed due to force majeure such as port strikes, sudden changes in customs policies, etc., clarify the responsibility division of both parties. In addition, if the agency company is responsible for cargo right transfer, clarify the issuance and transfer process of the bill of lading in the contract to prevent cargo right disputes. For imported patented waterproof materials, require the agency company to assist in handling the customs protection record of intellectual property rights to avoid goods being detained due to infringement. At the same time, add a confidentiality clause to the contract to prevent the leakage of business secrets such as enterprise procurement prices and supplier information.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-6", "datePublished": "2026-06-22T16:04:33Z", "author": {"@type": "Person","name": "Lucas Liu","url": "https://www.sh-zhongshen.com/en/team/lucas-liu/"} } , { "@type": "Answer", "text": "After the waterproof import materials arrive at the port, the customs on-site inspection mainly focuses on whether the brand, specifications and packaging of the goods are consistent with the declaration. For liquid waterproof coatings, samples will also be taken to test the components. If container unpacking inspection is encountered, ensure that the goods are stacked neatly to facilitate the customs inspection personnel to check, avoiding prolonged inspection time due to scattered goods. Seal authenticity identification is a key link. Check whether the seal number on the bill of lading is consistent with the actual seal number. If the seal is found damaged, take photos immediately and contact the agency company to explain the situation to the customs. In addition, if the customs requires inspection, cooperate in providing materials such as MSDS and technical specifications to speed up the inspection process and shorten the inspection time.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-7", "datePublished": "2026-06-22T15:54:37Z", "author": {"@type": "Person","name": "Michael Zhang","url": "https://www.sh-zhongshen.com/en/team/michael-zhang/"} } , { "@type": "Answer", "text": "The packaging of waterproof import materials must comply with international transportation standards. Especially liquid waterproof coatings are dangerous goods, and UN-certified dangerous goods packaging must be used, and correct dangerous goods labels must be marked on the packaging. For rolled waterproof materials, moisture-proof and pressure-proof packaging solutions must be adopted to avoid material deformation and performance degradation caused by moisture and extrusion during transportation. The preparation of MSDS must be accurate and complete, including details such as goods composition, transportation requirements, emergency treatment measures, etc. If the MSDS information is incomplete, it will lead to customs detention or logistics refusal. In addition, the shipping mark on the packaging must be consistent with the information on the customs declaration form and bill of lading, including consignee information, goods name, quantity, etc., to avoid wrong delivery or detention due to inconsistent shipping marks.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-8", "datePublished": "2026-06-22T15:46:47Z", "author": {"@type": "Person","name": "Victor Sun","url": "https://www.sh-zhongshen.com/en/team/victor-sun/"} } , { "@type": "Answer", "text": "If imported waterproof materials are used for re-export, strictly implement the document filing system, retain import customs declaration forms, purchase contracts, export customs declaration forms, payment receipts and other materials for tax authorities to verify. The consistency of four flows is the core requirement of export tax refund: capital flow, cargo flow, invoice flow and contract flow must be completely matched. If there is inconsistency, the tax refund application will be rejected and even trigger tax investigation. In addition, the 2026 export tax refund declaration deadline is 180 days after the goods are declared for export. Failure to declare within the deadline will make it impossible to enjoy the tax refund policy. If tax investigation is encountered, provide relevant supporting materials in time to explain the actual flow of goods and transaction background, avoiding tax refund delays.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-9", "datePublished": "2026-06-22T15:38:52Z", "author": {"@type": "Person","name": "Grace Wang","url": "https://www.sh-zhongshen.com/en/team/grace-wang/"} } , { "@type": "Answer", "text": "For enterprises that import waterproof materials for a long time, they can reduce overall costs by optimizing the supply chain structure, such as using CIF trade terms instead of FOB, entrusting logistics, insurance and other links to professional agency companies to achieve one-stop service. Inventory linkage strategy is also critical. Plan the import time in advance according to the project timeline to avoid capital occupation due to goods backlog, and establish safety inventory to prevent project shutdown due to logistics delays. The cost actuarial model must cover all costs such as import tariffs, value-added tax, logistics fees, agency service fees, etc. By comparing the quotes and service contents of different agency companies, select the most cost-effective solution. In addition, establish a long-term cooperative relationship with the agency company to strive for more preferential service prices and priority customs clearance channels.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/waterproof-import-material-agent-core-service-capabilities.html#suggestedAnswer-10", "datePublished": "2026-06-22T15:38:44Z", "author": {"@type": "Person","name": "Cindy Chen","url": "https://www.sh-zhongshen.com/en/team/cindy-chen/"} } ] } }, { "@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": "What Core Service Capabilities Should Be Prioritized When Selecting a Waterproof Import Material Agency?"} ] } ] ```