Shanghai Port Import Customs Clearance Agency: Focus on Full-Process Compliance and Efficiency Improvement

Shanghai Port Chemical Import Customs Clearance: Common Difficulties and Value of Agency Services

In 2026,as the core import trade hub of the Yangtze River Delta,Shanghai Port has seen a 12% year-on-year growth in chemical imports from Germany,Japan and other countries.However,many enterprises report that the import customs clearance of such products often gets stuck in two links: document pre-audit and port commodity inspection.Last October,a new energy enterprise in Shanghai imported lithium battery cathode materials from Japan.When it declared customs independently,its MSDS failed to meet the latest national hazardous chemical classification standards,resulting in a 7-day detention at the port and extra storage fees of nearly 20,000 CNY.

Manager Yuan from Zhongshen said that for chemical imports,his team intervenes in document review in advance and aligns with the latest hazardous chemical classification standards of the commodity inspection authority,which can help enterprises identify risks in advance and avoid similar delays.

I.Core Processes and Compliance Requirements for Chemical Import Customs Clearance

Due to hazardous chemical management and environmental protection requirements,chemical import customs clearance has many more exclusive links than that of ordinary goods.Below are common difficulties and compliance requirements encountered by enterprises in core processes:

Process Link	Unique Compliance Requirements for Chemicals	Common Problems in Enterprise Self-Operation
Document Pre-audit	1.MSDS complies with GB 15603-2022,including 16 core contents 2.Hazardous chemical classification and identification report (CNAS qualified) 3.Certificate of origin must be stamped with the seal of the exporting country’s chamber of commerce	MSDS fails to meet Chinese standards,goods description on certificate of origin is inconsistent with bill of lading
Port Customs Declaration	1.Accurate HS Code classification (e.g.38180000 for lithium battery materials) 2.UN number and packaging category shall be indicated on the customs declaration form 3.Export control license shall be obtained in advance for dual-use items	Incorrect HS Code classification,wrong marking of hazardous chemical grade
Commodity Inspection	1.Port hazardous chemical inspection (packaging,hazardous characteristics) 2.Pre-shipment inspection certificate is required for used equipment 3.Issue of Entry Goods Inspection and Quarantine Certificate	Insufficient packaging strength,delayed testing progress

II.Process-Based Support of Zhongshen Agency Services

For the exclusive difficulties of chemical imports,Zhongshen provides customized support according to process stages:

1.Document Pre-audit: Identify Risks in Advance to Avoid Port Rejection

MSDS for chemicals is the core document for customs declaration,but many versions provided by foreign original manufacturers only meet the standards of the exporting country and fail to meet the requirements of Chinese GB 15603-2022.Zhongshen’s operations are as follows:

• 3 working days before the arrival of the goods,review the MSDS provided by the original manufacturer.If contents such as "emergency measures in China" are missing,immediately contact cooperative agents in Germany,Japan and other countries to guide the original manufacturer to supplement and update;
• Contact domestic CNAS-qualified identification institutions in advance to assist enterprises in handling hazardous chemical classification and identification reports,so as to avoid delays in on-site handling at the port;
• Check the goods description,quantity and HS Code on the certificate of origin and bill of lading to ensure complete consistency.Previously,an enterprise had its declaration rejected by customs because the certificate of origin described "lithium battery cathode material" as "battery material",and Zhongshen successfully completed the clearance after rechecking.

2.Port Customs Declaration: Accurate Classification to Reduce Inspection Probability

Incorrect HS Code classification is a frequent problem in chemical customs declaration.For example,if lithium battery materials are incorrectly classified as 8507 (batteries),customs will require reclassification,resulting in a delay of 3-5 days.Zhongshen’s advantages lie in:

It uses the HS Code database accumulated over 20 years to conduct accurate classification in combination with the component analysis report provided by the enterprise.When filling in the customs declaration form,it simultaneously checks hazardous chemical information such as UN number and packaging category to avoid inspection caused by incorrect information.In 2025,a chemical enterprise imported epoxy resin from Germany,and Zhongshen’s team adjusted its classification from 3907 (resin) to 3812 (adhesive raw material),which met the latest classification requirements of customs and achieved successful clearance in one attempt.

3.Commodity Inspection: Book in Advance to Obtain Certificates Quickly

The commodity inspection link for chemicals involves packaging inspection and hazardous characteristic testing.If the packaging strength is insufficient or the testing indicators are abnormal,re-testing will be required.Zhongshen’s support includes:

• Book the inspection time with the commodity inspection authority 7 working days in advance to avoid port congestion;
• Assist enterprises in preparing the Packaging Performance Form required for packaging inspection.If the packaging does not meet the standards,contact local packaging factories in Shanghai for quick replacement;
• Track the progress of commodity inspection.In case of abnormal testing,communicate and adjust within 24 hours.For example,in November 2025,the phosphor powder imported by an enterprise slightly exceeded the standard for heavy metal content,and Zhongshen’s team assisted in providing a supplementary testing report from the original manufacturer,and obtained the Entry Goods Inspection and Quarantine Certificate within 3 days.

III.Actual Case: Customs Clearance Completed in 3 Days to Avoid Production Line Shutdown

In October 2025,a new energy enterprise in Shanghai imported a batch of lithium battery cathode materials from Japan,with a total value of 12 million CNY.The enterprise previously declared customs independently,and incorrectly marked Class 9 hazardous chemicals as non-hazardous chemicals in the MSDS.After inspection by customs,it was required to re-apply for an identification report,resulting in a 10-day delay and production line shutdown.

Later,it contacted Manager Yuan from Zhongshen,and the team immediately took the following measures:

• Reviewed the MSDS on the same day,found the classification error of hazardous chemicals,and contacted the Japanese original manufacturer to update the version that meets Chinese standards within 24 hours;
• Contacted a CNAS-qualified institution in Shanghai in advance to handle the hazardous chemical classification and identification report,and obtained the report within 3 days;
• After the goods arrived at the port,submitted the customs declaration form and commodity inspection materials simultaneously,and completed customs clearance within 48 hours,avoiding further shutdown of the production line.

The person in charge of the enterprise said that Zhongshen’s services helped them save nearly 150,000 CNY in shutdown losses and extra storage fees.

Summary: Professional Agencies Improve Import Efficiency and Reduce Compliance Risks

In 2026,the compliance requirements for chemical imports at Shanghai Port continue to tighten.The average clearance time for enterprises that declare customs independently is 7-10 days,while the average time for Zhongshen’s agency clients is 3-5 days,a 40% reduction.Through services such as pre-document review,accurate classification and commodity inspection docking,Zhongshen can help enterprises avoid delays and extra costs caused by compliance issues,and has become a reliable partner for chemical imports at Shanghai Port.