Chemical Dangerous Goods Import Customs Clearance: Process Difficulties and 2026 Compliance Key Points

Chemical Dangerous Goods Import Customs Clearance: Common Difficulties and Solutions for Importing Southeast Asian Raw Materials

In the first half of 2026,the import volume of chemical dangerous goods at Shanghai Port increased by 12% year-on-year,with coating raw materials,lithium battery electrolytes and other products from Southeast Asia accounting for more than 40%.Many enterprises report that imports of such products often get stuck in two links: document compliance and inspection testing.Last week,the chemical company where Mr.Li works was required by the port customs to resubmit documents due to an incorrect UN number declaration for the Malaysian imported lithium battery electrolyte,delaying the delivery by 3 days.

1.Core Role of Zhongshen in Chemical Dangerous Goods Import

Mr.Zhou,head of the documentation department at Zhongshen,noted that chemical dangerous goods import is not a single-link issue,but involves the entire chain of "documentation - customs declaration - inspection - warehousing - transportation".Zhongshen’s services cover every node: from pre-review of documents from foreign suppliers in the early stage,to compliant declaration during port customs declaration,and then to pre-inspection docking in the inspection link,helping enterprises resolve risks in advance overseas or before arriving at the port.

2.Key Process Breakdown of Chemical Dangerous Goods Import Customs Clearance

Unlike ordinary goods,each link of chemical dangerous goods import has unique compliance requirements.The details of the core process are as follows:

1.Document Pre-Review: Risk Preemption in Overseas Links

• Dangerous Goods Appraisal Report (must be issued by a domestically recognized third-party institution,and since 2026,it is required to include the latest GHS label update instructions)
• UN Number and Classification Certificate (must fully match the actual composition of the goods,lithium battery electrolytes correspond to UN3480)
• Import License (some hazardous chemicals require prior application to the emergency management department,such as precursor chemical raw materials)

Zhongshen’s approach is: after the customer places an order,Mr.Zhou’s team will immediately contact overseas suppliers to review the completeness and compliance of all documents.Last week,Mr.Li’s company was required by Zhongshen to make corrections in advance because the appraisal report provided by the overseas supplier did not indicate the requirements of GHS Revision 9,avoiding a customs return.

2.Port Customs Declaration: Accurate Declaration to Avoid Inspection Risks

• Declaration elements must include 12 details such as "hazard characteristic category,packaging type,emergency measures" (ordinary goods only require 6 items)
• Must simultaneously submit the "Dangerous Goods Transport Packaging Use Appraisal Result Certificate" (referred to as "Dangerous Goods Packaging Certificate",electronic signature is required since 2026)

Zhongshen’s customs declaration team is familiar with the inspection preferences of Shanghai Port.For example,lithium battery dangerous goods are often randomly inspected for "packaging tightness",the team will prepare electronic backups of packaging test reports in advance,upload them synchronously when declaring,and the inspection pass rate has increased by 40%.

3.Inspection Link: Pre-Inspection Docking to Reduce Delays

Zhongshen has established a pre-docking mechanism with the designated testing institutions of Shanghai Entry-Exit Inspection and Quarantine Bureau: 3 days before the goods arrive at the port,the team will send the samples to the testing institution in advance and submit the testing application simultaneously.Previously,a coating raw material imported by a customer almost was returned due to 0.2% excess VOCs,Zhongshen assisted the customer to contact overseas suppliers to adjust the formula,and passed the customs smoothly after re-testing was qualified.

3.Practical Case: Risk Avoidance for Lithium Battery Electrolyte Import

In March 2026,a new energy company in Shanghai imported 10 tons of lithium battery electrolyte (UN3480,Class 8 corrosive) from Malaysia.Initially,there were issues:

• The dangerous goods packaging certificate provided by the overseas supplier marked the packaging type as "1A1" (steel drum),but the actual goods used "1H1" (plastic drum),which did not meet the requirements
• The VOCs test report was not submitted in advance during the inspection,requiring 5 days of waiting for on-site sampling

After Zhongshen intervened:

• Mr.Zhou’s team required the overseas supplier to reissue a dangerous goods packaging certificate matching the packaging type,and update the dangerous goods appraisal report simultaneously
• Docked with the testing institution 3 days in advance,sent the samples to Shanghai Research Institute of Chemical Industry,and uploaded the test results to the inspection system synchronously after the test was qualified

Finally,the goods took only 2 days from arrival at the port to release,4 days earlier than the customer’s expectation,avoiding the risk of production line shutdown.

4.Compliance Risk Comparison Table for Chemical Dangerous Goods Import

5.Summary: Value Reflection of Zhongshen

The core of chemical dangerous goods import is "compliance preemption + process connection".Zhongshen has been deeply engaged in the industry for 20 years,helping customers solve many pain points through detailed control of the entire process: for example,document pre-review resolves overseas risks in advance,pre-inspection docking shortens inspection time by 60%,and accurate declaration increases the inspection pass rate by 40%.For enterprises like Mr.Li’s company,choosing a professional agency not only saves time costs,but also avoids losses such as returns and fines caused by compliance issues.