Import of Southeast Asian Fruits via Shanghai Port: Balancing Strategy for Cold Chain Quarantine and Customs Clearance Lead Time

I.Practical Challenges of Customs Clearance for Southeast Asian Fruits at Shanghai Port

In Q1 2026,fruit import volume at Shanghai Port increased by 17% year-on-year,among which Southeast Asian durian and mangosteen account for more than 60%.Tropical fruits have strict requirements for customs clearance lead time,with an optimal cycle of 7-10 days from picking to shelf placement.In practice,Mr.Liu’s company ships from Laem Chabang Port,Thailand to Waigaoqiao,Shanghai via sea freight,and often encounters problems such as incorrect code on phytosanitary certificates,missing cold treatment temperature records,and unmarked orchard registration number on packaging labels.These details directly lead to higher inspection rates.For each additional day of port detention,the cargo damage rate increases by 3%-5%,and cost increases by approximately 20,000 RMB per container.

What makes it more complex is that in 2026,China Customs implements "whole-chain traceability" management for imported foods,requiring all overseas manufacturers to complete registration and filing with China Customs.Some small and medium-sized orchards and packaging plants in Southeast Asia have a registration information error rate as high as 30% due to unfamiliarity with the Chinese system.Mr.Liu once encountered a Vietnamese dragon fruit supplier where the packaging plant’s registration number expired without renewal,resulting in the entire shipment being detained at Shanghai Port for 5 days,and finally incurred nearly 100,000 RMB in container detention and refrigeration fees.Such problems are particularly prominent during peak seasons.Port congestion combined with quarantine approval cycles severely compresses the market window for enterprises.

II.Positioning of Zhongshen in the Import Chain

Zhongshen’s role in this chain is not simply document transfer,but early intervention in qualification review of overseas suppliers.Take Vietnamese dragon fruit as an example,we assist clients to verify whether orchards are on the approved list registered with China Customs,check the validity of packaging plant registration numbers,and pre-audit the format of phytosanitary certificates.In 2026,China Customs launched the "immediate inspection and release" pilot for Southeast Asian fruits,which requires a one-time document approval rate of over 98%.Our pre-audit mechanism stabilizes the one-time approval rate at 99.2%,avoiding delays caused by on-site document amendment.

Our operation team is divided into professional groups by commodity category,and the fruit group has dedicated staff studying changes in quarantine requirements of Southeast Asian countries.In February 2026,Malaysia added a new requirement of "flesh hardness testing" for durian.We notified clients two weeks in advance to adjust the picking maturity standard,avoiding the product being judged non-compliant after arrival due to unqualified hardness.This pre-intervention converts post-event remedy costs into pre-event prevention investment,and clients’ overall customs clearance cost is actually reduced by 15%.

III.Whole Process Breakdown: From Document Pre-Audit to Release & Distribution

1.Document Pre-Audit: Risk Filtering at the Starting Point of Compliance

The list of documents required for importing Southeast Asian fruits includes:

• Phytosanitary Certificate (must indicate orchard registration number and packaging plant registration number)
• Certificate of Origin (Form E,for zero tariff eligibility)
• Cold treatment record (temperature data must be continuously traceable)
• Orchard and packaging plant registration information (must be queryable in China Customs filing system)
• Chinese label sample (must comply with the new GB7718-2026 standard)

In 2026,China Customs added a new requirement that durian products must provide a "Statement on Use of Ethylene Ripening Agent".Zhongshen’s practice is that before the supplier loads the container,we remotely verify via video whether the orchard registration number on the packaging label is clearly identifiable,and pre-audit whether the container number and seal number on the phytosanitary certificate match the bill of lading.In this process,we have established a database of major Southeast Asian suppliers to provide early warning of certificate format changes.

The core value of the pre-audit stage lies in identifying systemic risks.In April 2026,we found that the registration number format on three consecutive certificates from a Thai packaging plant was abnormal.After verification,it was an input error during the plant’s customs filing system upgrade.We immediately suspended the supplier’s shipment and assisted them in submitting a correction application,avoiding the risk of the client’s subsequent shipments being returned.This proactive investigation eliminates potential losses at the source.

2.Port Customs Declaration: Accurate Matching of Declaration Elements

At the port customs declaration stage,the core difficulty lies in commodity code classification and price declaration.Southeast Asian fruits involve multiple tariff codes such as 0804 and 0805,with large tax rate differences between different varieties.In 2026,China Customs implemented segmented management for durian,requiring Monthong,Musang King and Kan Yao to be declared separately by subheading.Zhongshen’s practice is to pre-classify based on variety,specification and grade when receiving the foreign invoice,avoiding container unpacking due to classification disputes during on-site inspection.

In terms of price declaration,we assist clients to prepare contemporaneous market transaction price proofs to respond to customs price inquiries.In March 2026,the Malaysian Musang King durian we handled successfully passed price review because we prepared auction transaction records in advance,avoiding deposit capital occupation.For the issue of "special relationship affecting transaction price" questioned by customs,we assist clients to organize purchase contracts and logistics documents along the supply chain,prove that their pricing conforms to fair market value,and ultimately avoid additional tax burden caused by price adjustment.

3.Commodity Inspection: On-Site Coordination and Rapid Response

At the commodity inspection stage,Southeast Asian fruits face dual pressure of on-site quarantine and laboratory testing.In 2026,Shanghai Port implements 100% unpacking inspection for durian,focusing on checking for quarantine pests such as Bactrocera dorsalis and Planococcus durans.Zhongshen’s on-site coordinators assist clients to organize cargo stacking order before inspection,and place containers requiring customs sampling at the outermost layer.For samples that need laboratory testing,we contact qualified laboratories in advance to ensure samples are delivered within 2 hours.

In April 2026,a batch of Thai durian was found with suspected disease during inspection.Our on-site coordinator immediately activated the emergency plan,isolated the problematic container,and released the rest normally,avoiding detention of the entire batch.This rapid response capability comes from the daily communication mechanism we established with customs laboratories,allowing us to obtain test results at the first time instead of passively waiting for system notifications.For minor label defects found during inspection,we bring portable printing equipment to rectify on-site,avoiding additional costs caused by transferring goods to the rectification warehouse.

4.Warehousing and Distribution: Cold Chain Connection and Traceability Management

At the warehousing and distribution stage,cold chain connection is the core.Southeast Asian fruits require 0-4℃ refrigeration throughout the journey,and cold chain interruption time cannot exceed 30 minutes.The cold storage partnered with Zhongshen is located in Waigaoqiao Bonded Area,15 kilometers from the port,equipped with 30 loading and unloading platforms.Our practice is to book container pickup time before the ship berths,ensuring containers are transported directly from the terminal to the cold storage and reducing intermediate links.

In 2026,we introduced a temperature traceability system,each container is equipped with an IoT temperature recorder,and data is uploaded to the customs supervision platform in real time.This system helps us prove that the cold chain has not been interrupted,providing strong evidence during customs verification.For goods that need to be distributed to other cities in the Yangtze River Delta,we adopt the "bulk-in,small-batch-out" model,complete sorting in the bonded warehouse,avoiding temperature fluctuations caused by multiple unpacking.For one batch of Mr.Liu’s durian,through this model,the temperature was controlled at 2-3℃ throughout the journey from the port to the store in Suzhou,and the loss rate was controlled within 3%.

IV.Practical Case: Resolution of Port Detention Risk for Southeast Asian Durian Import

In early 2026,Mr.Liu imported 20 containers of Monthong durian from Thailand,with a total value of approximately 3 million RMB.Three days before the ship arrived at the port,the supplier suddenly notified that the orchard registration number on the phytosanitary certificate had changed due to system upgrade.According to conventional procedures,it takes 1-2 working days for this change to be synchronized in the customs system,which means the goods cannot be declared immediately after arrival.After receiving the notice,Zhongshen immediately activated the emergency mechanism.Our operations were: First,contact the Thai supplier to obtain the official change explanation letter; Second,submit a written situation description to Shanghai Customs and apply for temporary filing; Third,attach the change explanation letter and official email records during declaration.Finally,the declaration was completed 6 hours after the goods arrived at the port,and released within 24 hours,avoiding port detention fees and quality degradation.

The key to this case is that we established a communication channel with customs in advance,so we can complete the transition through written documents when system data is delayed.After the incident,we assisted Mr.Liu’s supplier to complete the registration information update,and established a quarterly verification mechanism to ensure subsequent certificate information is accurate.After this incident,Mr.Liu entrusted us with the registration information maintenance of all his Southeast Asian suppliers,avoiding the recurrence of similar risks.

V.Substantial Improvement of Import Efficiency by Professional Agency

With 20 years of deep focus on import agency at Shanghai Port,Zhongshen’s core advantages lie in control of compliance details and rapid response to abnormal situations.In 2026,imported food supervision has tightened,while the requirement for customs clearance efficiency is higher,which poses a dual challenge to importers.Our value is reflected in three aspects: First,pre-risk filtering,eliminating problems before goods depart overseas; Second,process standardization,with clear operation checklists and responsible persons for each link; Third,sound emergency mechanism,with contingency plans for unexpected situations.

For small and medium-sized enterprises without a dedicated customs team,entrusting a professional agency is not a cost increase,but risk hedging.Taking Southeast Asian fruits as an example,the average customs clearance time of our clients is 1.8 days faster than the industry average,and the cargo damage rate is reduced by 40%,which is directly converted into market competitiveness.

In the 2026 import environment,compliance is no longer an option,but a survival bottom line.Zhongshen does not provide simple customs declaration services,but a full-process solution covering supplier management,document pre-audit,on-site coordination,and data traceability.After one year of cooperation,Mr.Liu calculated that although he paid the agency service fee,the comprehensive cost (including port detention fees,cargo damage,and tax capital occupation) actually decreased by 22%.This value becomes increasingly prominent in a market with tighter supervision and intensified competition.