Why Are Imported Foods Frequently Detained by Customs? This Shanghai Agency Wins Clients with Reliable Quality

1.European Dairy Import: Practical Difficulties Behind High Entry Thresholds

In early 2026,the inspection rate of imported dairy products at Shanghai Port increased by 15% year on year.New EU regulations require additional production batch traceability reports for infant formula,and cold chain temperature records for pasteurized milk must be accurate to each hour.Mr.Shen runs an imported food distribution business in Pudong.At the beginning of the year,a batch of Greek yogurt was detained by customs for two weeks due to a 0.3g deviation between the protein labeling on the product and laboratory test data,missing the Spring Festival sales peak.Such cases are not isolated,as many enterprises underestimate the complexity of quality compliance for imported food.

2.Zhongshen’s Intervention: End-to-End Quality Gatekeeping from Documentation to Physical Goods

Zhongshen was registered in Shanghai in 2006,focusing on import customs clearance for 20 years.After cooperating with Mr.Shen,the company first audited his supplier system,and found that the health certificate formats of three European dairy enterprises did not meet the latest template requirements of the General Administration of Customs issued in 2026.The agency team assisted the factories to complete document updates three months in advance,avoiding the risk of subsequent batch detention.This pre-intervention model transforms the passive declaration of traditional customs brokers into proactive quality management.

3.Process Breakdown: Quality Control at Four Key Nodes

1.Document Pre-audit: Block Compliance Gaps at the Source

Core documents for imported dairy products include certificate of origin,health certificate,component analysis report and label specimen.New requirements added in 2026: all certificates must carry the EU official electronic signature,and separate declaration is required if dairy raw materials contain genetically modified ingredients.Zhongshen’s document review team checks page by page whether the certificate numbers are consistent with the registration information in the EU FSA database,and once intercepted an expired health certificate for a client that was 48 hours past its validity period.Label review is even more rigorous: nutrition claims on Chinese labels must comply with the revised GB 28050-2026,and even a single wrong character may lead to a non-compliance judgment.

Zhongshen focuses on verifying the following documents during the document pre-audit stage:

• Certificate of origin (must carry EU electronic signature,consistent with FSA database registration)
• Health certificate (validity period strictly controlled,format meets 2026 GAC template)
• Component analysis report (GM ingredients must be declared separately,data accurate to two decimal places)
• Chinese label specimen (complies with GB 28050-2026,nutrition claims completely accurate)

2.Port Customs Declaration: Accurate Matching of HS Codes and Tariff Rates

There are many ambiguous areas in HS code classification for dairy products.The tariff difference between modified milk powder and infant formula is 12%,and classification errors directly lead to cost distortion.Zhongshen’s customs declarers hold classification qualification certificates issued by the General Administration of Customs,and can accurately distinguish between tariff headings 0402 and 1901 for products with whey protein content between 2.8% and 3.2%.Under the RCEP agreement in 2026,New Zealand dairy products can enjoy zero tariff with certificate of origin,but transit cargo requires submission of a non-manipulation certificate.Zhongshen’s system automatically matches the optimal tariff scheme,helping Mr.Shen save 87,000 yuan in customs duties for a batch of New Zealand butter.

3.Commodity Inspection and Release: Risk Pre-control for Sampling Testing

Port commodity inspection implements sampling for each batch of dairy products,covering 23 test items including melamine,heavy metals and microorganisms.Shanghai Port launched the "conformity assessment + risk monitoring" model in 2026,which mandatorily requires official laboratory reports from the producing country for first-time imported products.Before goods arrive at the port,Zhongshen sends samples to cooperative third-party laboratories for parallel testing in advance,and immediately activates return or rectification procedures if problems are found.A batch of French cheese of Mr.Shen was found to have excessive Listeria monocytogenes during pre-inspection,and the agency team notified the supplier to recall the goods three days before arrival,avoiding destruction losses.

Quality control priorities in the commodity inspection link include:

• Full inspection of 23 indicators including melamine,heavy metals and microorganisms
• Verification of consistency between nutritional components and labels (deviation shall not exceed the allowable range of national standards)
• GM ingredient screening (for products containing soy lecithin)
• Allergen labeling compliance (lactose and milk protein in dairy products must be clearly marked)

4.Warehousing and Logistics: Quality Commitment of Uninterrupted Cold Chain

Dairy products need to be transported in a 2-6℃ environment throughout the whole process,and temperature fluctuation exceeding 3℃ is regarded as a quality accident.Zhongshen’s own Pudong Airport Bonded Warehouse is equipped with a real-time temperature control system,with data directly connected to the customs supervision platform.In the summer of 2026,when Shanghai experienced continuous 40℃ high temperature,the temperature of a batch of pasteurized milk of Mr.Shen rose to 8℃ due to a refrigerated truck malfunction.Zhongshen’s monitoring platform immediately issued an alarm and activated the emergency response plan: the goods were directly transferred to the bonded warehouse for quick-freezing treatment,and a third-party testing institution was arranged to issue a quality assessment report.Finally,with the complete evidence chain,the team convinced customs to agree to technical rectification rather than direct destruction,recovering more than 600,000 yuan in goods value.

4.Practical Case: Resolution of a Label Crisis

In March 2026,Mr.Shen imported a batch of growing-up milk powder from the Netherlands,with Chinese labels already registered.After arrival,customs random inspection found that the "choline" content on the label was marked as "120mg per 100g",but the laboratory test value was 118mg.Although within the allowable error range of national standards,the label value did not match the measured value,which was suspected of false advertising.According to the regular process,this batch of goods would face label rectification or return,with a delay of at least 20 days.Zhongshen’s regulatory team retrieved the original EU formula documents on the same day,proving that the choline addition amount of this batch was indeed 120mg during production,and the test deviation came from differences in laboratory methods.At the same time,the team submitted an official explanation letter from the producing country to apply for technical correction of the label value.Customs recognized the evidence chain and allowed the corrected labels to be affixed on site at the port,resulting in a delay of only 3 days before release.Mr.Shen calculated that if he handled it independently,he would not only miss the sales season,but also bear return shipping fees and penalties,with losses exceeding 1 million yuan.Zhongshen’s professional intervention reduced the loss to less than 50,000 yuan.

5.Tangible Value of a Reliable Quality Agency

Choosing a quality-oriented agency like Zhongshen brings quantifiable benefits.In terms of customs clearance time,the average time for ordinary agencies is 7-12 working days,while Zhongshen can shorten it to 3-5 days through the pre-audit mechanism.In terms of compliance cost,the average return rate of imported dairy products in 2026 is 3.2%,while the return rate of Zhongshen’s clients is controlled within 0.5%.Intangible value is even more critical: continuous optimization of supplier quality system,improvement of customs credit rating,and rapid response to sudden risks.After two years of cooperation,Mr.Shen’s company was rated as "Advanced Certified Enterprise" by customs,with the inspection rate reduced from 30% to 5%.In 2026 when industry competition is fierce,this directly translates into supply chain efficiency advantages.

The import regulatory environment will only become stricter in 2026,and the era for enterprises to operate independently has passed.The value of agencies like Zhongshen does not lie in simple customs declaration errands,but in embedding quality control into every link of the supply chain.Mr.Shen recently transferred all his import business to Zhongshen,he said: "Leave professional work to professionals,and I focus on sales.This is the value of division of labor." When reliable quality becomes the baseline rather than a selling point for import agencies,the industry will truly reach maturity.