Dangerous goods declaration in cross-border transportation: common document errors and customs detention risks

I. Importance of cross-border dangerous goods declaration
Cross-border transportation of dangerous goods involves strict international regulations and special requirements of customs in various countries. Correct declaration is not only related to transportation safety, but also a basic requirement for corporate compliance operations. A declaration error may lead to cargo detention, high fines and even legal liability.

II. Common document error types

1. Wrong classification of dangerous goods
   Confusing UN number with CAS number

Wrong judgment of hazard level (such as misreporting Class 8 corrosives as Class 9 miscellaneous items)

Failure to identify the hazard of the mixture

2. Incomplete documents
   Missing safety data sheet (SDS/MSDS)

Incomplete information on dangerous goods transport declaration (DGD)

Missing or expired packaging certification documents

3. Label and identification issues
   The size and color of dangerous goods labels do not meet IMDG/ADR standards

Not marked in the transport language (usually English)

Unclear packaging markings

4. Inconsistent declaration content
   Inconsistent with the information on the bill of lading, invoice and dangerous goods declaration form

The actual goods are too different from the declared quantity/weight

Inaccurate description of the packaging type

III. High-risk situations for customs detention

False declaration: intentionally underreporting the hazard level or concealing the nature of the hazard

Expired documents: using expired identification reports or transportation certificates

Unqualified packaging: using uncertified packaging containers

Special requirements are not met:

Lithium batteries do not pass the UN38.3 test

Limited quantity exemption clauses are incorrectly applied

Special licensing documents required by the destination country are not provided

IV. Risk avoidance strategy
Establish a professional team: equip with DG-certified professionals

Improve the audit process: implement” “Double-person review” system

Dynamic knowledge update: Track GHS, ADR and other regulatory updates

Select compliance partners: Verify the DG processing qualifications of freight forwarders and customs brokers

Pre-declaration consultation: Communicate with the Customs Technical Center in advance for complex goods

V. Emergency handling suggestions
Once goods are detained:

Immediately activate the emergency plan to isolate risks

Employ a professional customs clearance company to intervene

Prepare technical materials to explain the situation

Assess whether to return or destroy

Record the processing process for subsequent improvements

Correct declaration of dangerous goods is an important guarantee for the safety of cross-border supply chains. Enterprises should incorporate them into the overall compliance management system, reduce risks through standardized operations and professional training, and ensure smooth international trade.