Analysis of Full Import Agency Payment Process: Compliance Operation Guide for Cold Chain Aquatic Products from Southeast Asia

Practical Difficulties in Importing Cold Chain Aquatic Products from Southeast Asia

In Q1 2026,the import volume of cold chain aquatic products from Southeast Asia at Shanghai Port increased by 17% year-on-year,while cases of return or destruction caused by inconsistent documents and unqualified quarantine also rose by 23% in the same period.Products such as Vietnamese pangasius,Thai black tiger shrimp and Indonesian tuna have strong market demand,but face three practical pressures: first,the application of rules of origin under the RCEP framework is complex,and enterprises often fail to enjoy tariff preferences due to incorrect certificate filling; second,Decree No.248 of the General Administration of Customs imposes stricter requirements on the registration of overseas production enterprises,and the qualification update of some small and medium-sized suppliers lags behind; third,the lack or break of temperature monitoring data during cold chain transportation greatly increases the probability of 100% unpacking inspection at the port.

The catering supply chain company run by Ms.Miao encountered a typical lesson at the beginning of the year.A 20-ton shipment of black tiger shrimp imported from Thailand was detained at Yangshan Port for 8 full days because the official foreign health certificate did not mark the specific test item code.In the end,it not only paid more than 30,000 yuan in container detention fees,but also suffered a direct loss of more than 400,000 yuan due to missing the Spring Festival sales peak.The root cause of such problems is that import enterprises are often proficient in front-end sales,but lack systematic understanding of back-end technical details such as HS code classification,animal and plant quarantine approval,and verification of registration numbers of overseas production enterprises for imported food.

Practical Role of Zhongshen in the Import Chain

After Zhongshen intervenes,its core role is not simply to run errands and submit documents,but to establish three lines of defense.The first is pre-risk screening: before the customer signs a contract with a foreign supplier,it participates in clause review to confirm whether the supplier is on the customs access list of China and whether the product involves special quarantine approval.The second is process node control: the traditional linear operation is changed to parallel promotion,for example,while pre-reviewing the health certificate,the domestic consignor filing verification is started simultaneously.The third is cost structure optimization: through the long-term cooperative channel of AEO Advanced Certified customs brokers,the inspection rate is reduced from the industry average of 15% to less than 5%,and at the same time,the scale effect of centralized declaration is used to reduce the logistics cost of individual customers.

Taking the subsequent cooperation with Ms.Miao as an example,Zhongshen required its Thai supplier to provide a pre-reviewed health certificate template at the procurement stage,and assisted the other party in updating the registration information of overseas production enterprises with Chinese customs.Before the goods were loaded,Zhongshen’s cooperative warehouse had prepared a cold chain inspection platform that met the requirements in advance,ensuring that the goods could be inspected without warehouse relocation after arrival at the port,saving 2-3 days of time alone.

Full Breakdown of Import Agency Payment Process

Phase 1: Document Pre-review and Access Verification

The core goal of this phase is to ensure that all documents meet the port declaration standards before the goods arrive at the port.Zhongshen’s operation list includes: checking whether the registration number of overseas production enterprises is within the validity period; confirming whether the health certificate contains 12 mandatory elements such as product name,specification,production date,shelf life,and transportation temperature; verifying whether the back-to-back clauses of the certificate of origin comply with RCEP accumulation rules; checking whether the consignee column of the bill of lading is marked with the domestic consignor filing number in a standardized manner.

The new key point in 2026 is to verify the electronic filing status of official foreign agency signatures.Some Southeast Asian countries have not yet completed electronic signature mutual recognition with Chinese customs,so it is necessary to confirm the mailing time limit of the original paper copy in advance.Zhongshen usually requires foreign suppliers to provide scanned copies of certificates within 24 hours after shipment,and the internal team conducts preliminary screening,and immediately starts the correction procedure if problems are found,instead of passively handling them after the goods arrive at the port.

Phase 2: Port Customs Declaration and Tax Calculation

The key to the customs declaration环节 lies in accurate classification and reasonable valuation.Cold chain aquatic products from Southeast Asia involve multiple tariff headings such as 0303,0304 and 1604,and the difference in tariff rates between different headings can reach 10 percentage points.Zhongshen’s classification team will determine the optimal code based on details such as product processing technology,packaging form,and ingredient ratio.At the same time,for the FOB terms commonly used by Southeast Asian suppliers,the apportionment ratio of freight and insurance premiums will be calculated in advance to avoid price inquiries during customs valuation.

Tax payment is the core link of agency services.Zhongshen adopts the "pre-collect and pay on behalf" model: based on the pre-entry data provided before the goods arrive at the port,tariffs,value-added tax,and consumption tax (if applicable) are calculated in advance,and the customer pays in advance after confirmation.The advantage of this model is that it avoids port detention caused by delays in the customer’s payment process.In 2026,the customs launched the upgraded version of "consolidated taxation",and Zhongshen has assisted 5 customers with annual import value exceeding 50 million yuan to apply for this qualification,realizing "release first,pay tax later",and further compressing customs clearance time.

Phase 3: Commercial Inspection and Compliance Handling

The commercial inspection of cold chain aquatic products focuses on three aspects: epidemic disease testing,veterinary drug residues,and label compliance.Zhongshen will pre-review the Chinese label samples before the goods arrive at the port to ensure that the product name,ingredient list,country of origin,and domestic agent information comply with the GB 7718 standard.For products that require sampling and testing,spare samples will be prepared in advance,and a fast track will be established with the laboratory,reducing the testing cycle from the conventional 7 working days to 3 working days.

The most difficult problem in the inspection link is abnormal temperature data.Zhongshen requires all cooperative logistics providers to install temperature monitoring equipment that meets the requirements of customs networking,and the data is uploaded to Zhongshen’s monitoring platform in real time.Once the temperature exceeds the standard during transportation is found,the emergency plan is launched immediately: for minor overruns,prepare a risk assessment report to apply for release; for serious overruns,decisively advise customers to abandon the shipment to avoid higher costs caused by subsequent destruction.

Practical Case: Risk Avoidance and Cost Optimization

In March 2026,Ms.Miao’s company planned to import a batch of seasoned pangasius fillets from Vietnam,with a goods value of about 800,000 yuan.During the document pre-review,Zhongshen found that the product description in the health certificate provided by the Vietnamese supplier was "seasoned pangasius fillet",while the product name on the contract was "spiced pangasius fillet".Although there is only a one-word difference,the customs system may determine that they are different products,resulting in invalid certificates.Zhongshen immediately contacted the Vietnamese supplier to reissue the certificate,and unified the product name expression in all documents such as bills of lading,invoices,and packing lists.

After the goods arrived at the port,the customs control order required inspection.Since Zhongshen had reserved an inspection time slot at the Yangshan Port cold chain inspection platform in advance,the goods did not need to be moved to the warehouse,and devanning and sampling were completed on the same day.More importantly,this shipment involved an RCEP certificate of origin,and Zhongshen accurately filled in the agreement code and origin standard during the declaration,finally enjoying zero tariff treatment and saving about 40,000 yuan in tariff expenditure.The entire process from arrival to release took 36 hours,and Ms.Miao only paid agency service fees,advanced taxes and logistics fees reimbursed on actual basis,without sending special personnel to coordinate on site.

Another detail is foreign exchange settlement.This shipment was settled by letter of credit,and Zhongshen found that the invoice amount submitted by the foreign bank had a 0.5% more or less discrepancy with the letter of credit during the document submission stage.According to usual practice,such discrepancies may lead to payment refusal.Relying on the long-term cooperative relationship with the issuing bank,Zhongshen communicated and explained the situation in advance,and assisted Ms.Miao in issuing a letter of guarantee,and finally collected the payment smoothly,avoiding the loss of 30% of the deposit.

Substantial Improvement of Import Efficiency by Agency Services

Through the agency payment model,enterprises obtain not only operational convenience,but also a fundamental change in the risk structure.Under the traditional self-operated import model,enterprises need to bear full responsibility for document errors,classification errors,unqualified quarantine,etc.Once problems occur,the legal,financial and procurement departments fall into mutual shirking.As a professional agency,Zhongshen clarifies the responsibility boundary through the service contract,and transfers the operational risk from the enterprise to the agency.The Customs Enterprise Credit Management Measures implemented in 2026 further strengthen this mechanism.AEO Advanced Certified agency enterprises can enjoy lower inspection rates,and this credit dividend is indirectly passed on to customers.

The efficiency improvement is reflected in two dimensions: time cost and capital cost.In terms of time,Zhongshen has reduced the average customs clearance time from the industry’s common 4-5 days to less than 1.5 days.For cold chain products,each day of early release can reduce the loss of goods value by about 0.3%.In terms of capital,through the combination of tools such as tax estimation,consolidated taxation,and foreign exchange hedging,the comprehensive financial cost of enterprises has decreased by 1.2-1.5 percentage points.For enterprises with an annual import value of 20 million yuan,this means saving 250,000 to 300,000 yuan in direct costs per year.

The deeper value lies in the internalization of compliance capabilities.During the service process,Zhongshen will regularly provide customers with policy update briefings and operational risk review reports to help enterprises gradually establish their own compliance awareness system.After half a year of cooperation,Ms.Miao’s company has been able to independently complete the sorting of basic documents,and only seeks review support from Zhongshen at key links.This model not only controls costs,but also retains professional guarantee.

New Changes in Import Agency Services in 2026

Since this year,the General Administration of Customs has fully implemented the "Smart Commercial Inspection" system,realizing 100% digitalization of quarantine approval for cold chain aquatic products.Zhongshen has completed the system connection,and customers can view the cargo status in real time through the exclusive portal.At the same time,the RCEP agreement has entered the third year of full implementation,and the application of rules of origin has become more detailed.Zhongshen has set up a special agreement tariff application team to provide one-to-one certificate planning solutions according to the differences in accumulation rules of different Southeast Asian countries.

Another trend is the deep integration of bonded warehousing and import agencies.The cold chain warehouse operated by Zhongshen in Waigaoqiao Free Trade Zone supports customers to import goods in batches and then exit the zone in batches,and the tax payment on behalf is also adjusted to "partial declaration,consolidated payment".This model is particularly suitable for catering enterprises with obvious seasonal sales characteristics,effectively alleviating the capital pressure of paying large amounts of tax at one time.

Choosing a professional agency is essentially outsourcing non-core business to a more efficient external team.Zhongshen has over 20 years of industry accumulation,and its core value is not limited to document handling,but transforming scattered policy requirements,technical details and operational experience into standardized service processes,helping enterprises maximize operational efficiency on the basis of compliance bottom line.For enterprises planning to import cold chain products from Southeast Asia,instead of paying high costs in trial and error,it is better to leverage the strength of professional agencies to establish a standardized operation baseline from the first shipment.