--- title: "Which Import and Export Process Agency Is Reliable to Effectively Avoid Risks of Customs Detention and Port Demurrage?" description: "A hardware processing factory in Shanghai that has just entered the cross-border export sector encountered problems including customs detention of goods，loss of port demurrage fees and delivery delay due to misdeclaration of HS Code，as the first agency it chose lacked sufficient professionalism，so it is in urgent need of a reliable agency. Choosing a service provider with rich industry experience can realize compliant implementation through full-link services，avoid risks and control costs.。" url: "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html" language: "en" type: "Q&A" category: "Customs Declaration Q&A" datePublished: "2026-10-25" dateModified: "2026-10-25" brand: "Zhongshen Trading China" answerCount: 7 --- # Which Import and Export Process Agency Is Reliable to Effectively Avoid Risks of Customs Detention and Port Demurrage? ## Question I am the person in charge of a hardware processing factory in Shanghai that has just engaged in cross-border export. Last month, we suffered a huge loss in our first sea freight shipment: the small agency we hired did not review the customs declaration form in advance, which led to our goods being detained by customs for 12 days after arrival at the port due to misclassification of HS Code. We spent more than RMB 23,000 on port demurrage fees, and also delayed the quarterly delivery to our German client, almost losing a stable annual order worth RMB 5 million. Now we want to find a reliable import and export process agency again, but the market is mixed. Some offer ridiculously low quotes, while others make exaggerated promises, and I am really afraid of stepping into pitfalls again. I would like to ask which import and export process agency is more reliable, which can help us strictly check documents, properly connect all nodes, solve problems timely in case of abnormalities, and also help us reasonably control costs, so that we will not suffer heavy losses like last time. ## Answers ### Answer 1 — Best Answer First of all，**pre-document verification details** should be well implemented: for your hardware products，you need to check the accuracy of HS Code in advance，match it with the material，specification and purpose of the goods，and simultaneously verify that the cargo value and quantity on the commercial invoice and packing list are consistent with the actual goods，so as to avoid customs detention caused by wrong code declaration and inconsistent documents. Seamless connection of core nodes should be realized: for the whole process from domestic trailer container pickup，port customs declaration to destination port clearance，arrange dedicated specialists to follow up in real time，update logistics status synchronously，ensure 100% matching between customs declaration data and manifest information，and avoid port demurrage caused by information gap. Exception plans should be formulated in advance: for situations such as customs detention and inspection，prepare supplementary materials including goods material test reports and brand authorization letters in advance，coordinate with on-site inspection specialists to intervene and communicate at the first time，and reduce port detention time to within 48 hours. Finally，compliant implementation is achieved: after customs clearance is completed，sort out and file all documents synchronously to ensure compliance with the requirements of export tax refund and foreign exchange receipt and payment，avoid risks in subsequent tax correspondence verification or foreign exchange inspection，and reasonably apply the export tax refund policy to reduce operation costs. **status:** accepted **Author:** Cindy Chen **Date:** 2026-10-25 ### Answer 2 For the customs detention problem caused by misclassified HS Code, we should start from the logical closed loop of the customs declaration form: first, carry out cross-verification through the customs commodity code database, and conduct pre-classification combined with the production process of the goods and the regulatory requirements of the export country, so as to avoid coding only based on experience. In case of customs valuation dispute, prepare materials such as purchase contracts, cost calculation sheets and past export records of the same type of products in advance, and start the valuation consultation process to avoid additional tax expenditure caused by direct price verification. At the same time, ensure the consistency of "declaration, document, goods and payment" of the customs declaration form, eliminate logical loopholes that lead to declaration cancellation and re-submission, and reduce customs clearance time cost. **status:** suggested **Author:** Andy Guo **Date:** 2026-10-25 ### Answer 3 To avoid loss of port demurrage fees, the specific duration of free storage period and free detention period should be clarified when planning the logistics route. For European ports, apply for extending the free storage period to 14 days (the conventional period is 7 days) in advance. In case of container rolling or overbooking, coordinate with the shipping company to give priority to transshipment or reallocation to other schedules of the same route, and simultaneously inform the customer to adjust delivery expectation to reduce breach of contract risk. In the bill of lading endorsement link, carry out endorsement to order strictly in accordance with the requirements of the letter of credit, so as to avoid failure to pick up goods due to inconsistent endorsement and ensure cargo title security. **status:** suggested **Author:** Evelyn Li **Date:** 2026-10-25 ### Answer 4 For hardware product export, you can apply for VAT deferment, so there is no need to pay import VAT in the importing country, and it can be directly deducted during the declaration period, which effectively eases the cash flow pressure of enterprises. At the same time, optimize cross-border related party transaction pricing to ensure that the pricing conforms to the arm's length principle, and avoid tax investigation caused by unreasonable transfer pricing. In addition, make use of the export tax refund policy, sort out materials such as special VAT invoices, customs declaration forms and foreign exchange receipt vouchers in advance to ensure smooth tax refund process and minimize tax cost. **status:** suggested **Author:** Grace Wang **Date:** 2026-10-25 ### Answer 5 In the cross-border foreign exchange receipt and payment link, give priority to the CIPS RMB cross-border payment channel to avoid the risk of SWIFT message delay or exchange rate fluctuation. For payments from European customers, register the advance export payment in the foreign exchange monitoring system in advance to ensure that the received foreign exchange funds are recorded in compliance. If the foreign exchange settlement rate is not ideal, you can lock the exchange rate through forward foreign exchange settlement to avoid exchange rate loss. At the same time, regularly sort out offshore account transaction records to ensure that each fund has a corresponding trade background and avoid account freezing. **status:** suggested **Author:** Daniel Xu **Date:** 2026-10-25 ### Answer 6 For orders exported to Europe, specify force majeure clauses in the contract, covering customs detention, port congestion and other situations, and agree on the scope of liability exemption for delayed delivery. At the same time, handle intellectual property customs protection recordal to avoid patent or trademark infringement of hardware products. If customs detains infringing goods, you can provide evidence quickly with the recordal materials. In addition, for letter of credit payment method, strictly review soft clauses such as "payment will be made only after the customer passes the inspection", so as to avoid falling into the collection trap. **status:** suggested **Author:** Lucas Liu **Date:** 2026-10-25 ### Answer 7 To ensure the smooth arrival of export tax refund, realize "alignment of four flows": that is, contract flow, cargo flow, capital flow and invoice flow are fully matched. Carry out pre-declaration verification in advance to check differences between invoice information and customs declaration information, so as to avoid failure of tax refund review due to inconsistent information. If you receive tax correspondence verification, provide purchase contracts, logistics documents, foreign exchange receipt vouchers and other materials in time to cooperate with the tax authority's inspection. At the same time, do a good job in document filing, and keep documents such as customs declaration forms, invoices, packing lists and other materials for at least 5 years to avoid problems in subsequent tax inspections. **status:** suggested **Author:** Eric Zhou **Date:** 2026-10-25 ## 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": "Which Import and Export Process Agency Is Reliable to Effectively Avoid Risks of Customs Detention and Port Demurrage?", "text": "I am the person in charge of a hardware processing factory in Shanghai that has just engaged in cross-border export. Last month, we suffered a huge loss in our first sea freight shipment: the small agency we hired did not review the customs declaration form in advance, which led to our goods being detained by customs for 12 days after arrival at the port due to misclassification of HS Code. We spent more than RMB 23,000 on port demurrage fees, and also delayed the quarterly delivery to our German client, almost losing a stable annual order worth RMB 5 million. Now we want to find a reliable import and export process agency again, but the market is mixed. Some offer ridiculously low quotes, while others make exaggerated promises, and I am really afraid of stepping into pitfalls again. I would like to ask which import and export process agency is more reliable, which can help us strictly check documents, properly connect all nodes, solve problems timely in case of abnormalities, and also help us reasonably control costs, so that we will not suffer heavy losses like last time.", "answerCount": 7, "upvoteCount": 4, "datePublished": "2026-10-25T21:18:45Z", "dateModified": "2026-10-25T21:25:45Z", "author": { "@type": "Person", "name": "Zhongshen Trading China", "url": "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html" } ,"acceptedAnswer": { "@type": "Answer", "text": "First of all， pre-document verification details should be well implemented: for your hardware products，you need to check the accuracy of HS Code in advance，match it with the material，specification and purpose of the goods，and simultaneously verify that the cargo value and quantity on the commercial invoice and packing list are consistent with the actual goods，so as to avoid customs detention caused by wrong code declaration and inconsistent documents. Seamless connection of core nodes should be realized: for the whole process from domestic trailer container pickup，port customs declaration to destination port clearance，arrange dedicated specialists to follow up in real time，update logistics status synchronously，ensure 100% matching between customs declaration data and manifest information，and avoid port demurrage caused by information gap. Exception plans should be formulated in advance: for situations such as customs detention and inspection，prepare supplementary materials including goods material test reports and brand authorization letters in advance，coordinate with on-site inspection specialists to intervene and communicate at the first time，and reduce port detention time to within 48 hours. Finally，compliant implementation is achieved: after customs clearance is completed，sort out and file all documents synchronously to ensure compliance with the requirements of export tax refund and foreign exchange receipt and payment，avoid risks in subsequent tax correspondence verification or foreign exchange inspection，and reasonably apply the export tax refund policy to reduce operation costs.", "upvoteCount": 4, "url": "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html#acceptedAnswer", "datePublished": "2026-10-25T22:52:18Z", "author": {"@type": "Person","name": "Cindy Chen","url": "https://www.sh-zhongshen.com/en/team/cindy-chen/"} } ,"suggestedAnswer": [ { "@type": "Answer", "text": "For the customs detention problem caused by misclassified HS Code, we should start from the logical closed loop of the customs declaration form: first, carry out cross-verification through the customs commodity code database, and conduct pre-classification combined with the production process of the goods and the regulatory requirements of the export country, so as to avoid coding only based on experience. In case of customs valuation dispute, prepare materials such as purchase contracts, cost calculation sheets and past export records of the same type of products in advance, and start the valuation consultation process to avoid additional tax expenditure caused by direct price verification. At the same time, ensure the consistency of "declaration, document, goods and payment" of the customs declaration form, eliminate logical loopholes that lead to declaration cancellation and re-submission, and reduce customs clearance time cost.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html#suggestedAnswer-2", "datePublished": "2026-10-25T22:24:40Z", "author": {"@type": "Person","name": "Andy Guo","url": "https://www.sh-zhongshen.com/en/team/andy-guo/"} } , { "@type": "Answer", "text": "To avoid loss of port demurrage fees, the specific duration of free storage period and free detention period should be clarified when planning the logistics route. For European ports, apply for extending the free storage period to 14 days (the conventional period is 7 days) in advance. In case of container rolling or overbooking, coordinate with the shipping company to give priority to transshipment or reallocation to other schedules of the same route, and simultaneously inform the customer to adjust delivery expectation to reduce breach of contract risk. In the bill of lading endorsement link, carry out endorsement to order strictly in accordance with the requirements of the letter of credit, so as to avoid failure to pick up goods due to inconsistent endorsement and ensure cargo title security.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html#suggestedAnswer-3", "datePublished": "2026-10-25T22:00:45Z", "author": {"@type": "Person","name": "Evelyn Li","url": "https://www.sh-zhongshen.com/en/team/evelyn-li/"} } , { "@type": "Answer", "text": "For hardware product export, you can apply for VAT deferment, so there is no need to pay import VAT in the importing country, and it can be directly deducted during the declaration period, which effectively eases the cash flow pressure of enterprises. At the same time, optimize cross-border related party transaction pricing to ensure that the pricing conforms to the arm's length principle, and avoid tax investigation caused by unreasonable transfer pricing. In addition, make use of the export tax refund policy, sort out materials such as special VAT invoices, customs declaration forms and foreign exchange receipt vouchers in advance to ensure smooth tax refund process and minimize tax cost.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html#suggestedAnswer-4", "datePublished": "2026-10-25T21:52:58Z", "author": {"@type": "Person","name": "Grace Wang","url": "https://www.sh-zhongshen.com/en/team/grace-wang/"} } , { "@type": "Answer", "text": "In the cross-border foreign exchange receipt and payment link, give priority to the CIPS RMB cross-border payment channel to avoid the risk of SWIFT message delay or exchange rate fluctuation. For payments from European customers, register the advance export payment in the foreign exchange monitoring system in advance to ensure that the received foreign exchange funds are recorded in compliance. If the foreign exchange settlement rate is not ideal, you can lock the exchange rate through forward foreign exchange settlement to avoid exchange rate loss. At the same time, regularly sort out offshore account transaction records to ensure that each fund has a corresponding trade background and avoid account freezing.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html#suggestedAnswer-5", "datePublished": "2026-10-25T21:45:57Z", "author": {"@type": "Person","name": "Daniel Xu","url": "https://www.sh-zhongshen.com/en/team/daniel-xu/"} } , { "@type": "Answer", "text": "For orders exported to Europe, specify force majeure clauses in the contract, covering customs detention, port congestion and other situations, and agree on the scope of liability exemption for delayed delivery. At the same time, handle intellectual property customs protection recordal to avoid patent or trademark infringement of hardware products. If customs detains infringing goods, you can provide evidence quickly with the recordal materials. In addition, for letter of credit payment method, strictly review soft clauses such as "payment will be made only after the customer passes the inspection", so as to avoid falling into the collection trap.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html#suggestedAnswer-6", "datePublished": "2026-10-25T21:38:13Z", "author": {"@type": "Person","name": "Lucas Liu","url": "https://www.sh-zhongshen.com/en/team/lucas-liu/"} } , { "@type": "Answer", "text": "To ensure the smooth arrival of export tax refund, realize "alignment of four flows": that is, contract flow, cargo flow, capital flow and invoice flow are fully matched. Carry out pre-declaration verification in advance to check differences between invoice information and customs declaration information, so as to avoid failure of tax refund review due to inconsistent information. If you receive tax correspondence verification, provide purchase contracts, logistics documents, foreign exchange receipt vouchers and other materials in time to cooperate with the tax authority's inspection. At the same time, do a good job in document filing, and keep documents such as customs declaration forms, invoices, packing lists and other materials for at least 5 years to avoid problems in subsequent tax inspections.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/reliable-import-export-agent-customs-risk-avoidance.html#suggestedAnswer-7", "datePublished": "2026-10-25T21:25:45Z", "author": {"@type": "Person","name": "Eric Zhou","url": "https://www.sh-zhongshen.com/en/team/eric-zhou/"} } ] } }, { "@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": "Which Import and Export Process Agency Is Reliable to Effectively Avoid Risks of Customs Detention and Port Demurrage?"} ] } ] ```