There is a statutory list of documents required for the export customs declaration of hardware structural components. In accordance with Decree No. 277 of the General Administration of Customs (*Provisions on the Administration of Declaration of Import and Export Goods*), the declaration must be accompanied by documents such as contracts, invoices, packing lists, cargo manifests, bills of lading, letters of authorization for customs declaration agents, and permits.
Additional documents related to commodity inspection or special requirements may also be necessary depending on the nature of the product.
The completeness of this documentation directly determines whether the goods will be released; this article provides a comprehensive checklist and important considerations.
I. Core Accompanying Documents (Eight Statutory Items)
- Contract: Export contract; product name, specifications, quantity, and value must match the customs declaration form;
- Invoice: Commercial invoice; must include details of the buyer and seller, product name, unit price, total price, and trade terms;
- Packing List: Itemized list showing box numbers, number of packages, gross/net weights, and volume for each box;
- Cargo Manifest: Manifest data provided by the shipping company or freight forwarder;
- Bill of Lading (Transport Document): Ocean bill of lading or other transport documents;
- Letter of Authorization for Customs Declaration: Signed when commissioning a customs broker (or submitted via the “Single Window” online electronic authorization system);
- Import/Export Permits: Products listed in the permit management catalog require a permit for customs declaration;
- Other Statutory Documents: Processing trade handbooks, dual-use item licenses, etc.
II. Additional Documentation Based on Product Nature
First, commodities subject to statutory inspection: Hardware products listed in the statutory inspection catalog (including certain iron and steel products and items affecting safety or the environment) must be declared for inspection via the “Single Window” system; customs clearance is granted upon presentation of the Customs Clearance Form, and applicants may request certificates such as Certificates of Quality or Weight. Second, export licenses: There are 43 categories of goods subject to export license management in 2026; specific iron and steel products fall under this requirement starting January 1, 2026, requiring online application (via the Ministry of Commerce’s unified business platform; processing time: 3 working days) using the export contract and a product quality inspection certificate issued by the manufacturer. Third, dual-use items: Items subject to dual-use controls—such as CNC machine tools—require an export license and the submission of technical documentation. Fourth, hazardous goods/products containing treatment agents: Submission of a Safety Data Sheet (SDS) and a transport identification report is required (usually a prerequisite for booking space with the shipping company).
III.
Supplementary Documents Required by Customers and Destination Ports
Certificates of Origin (General CO, GSP Form E, or RCEP Certificate of Origin—selected based on the destination country and trade agreements); invoice authentication (some Middle Eastern countries require Chamber of Commerce or embassy certification); insurance policies (seller-procured insurance under CIF/CIP terms); and photos of packaging and shipping marks (to be provided during inspection).
While not strictly required for customs declaration, these documents are crucial for customs clearance and settlement of payment at the destination port.
IV.
Four Key Areas of Consistency in Customs Declaration Forms
First, product name and HS Code must correspond accurately (hardware structural components often fall under Chapter 73: Articles of Iron or Steel); classification errors are a common cause of false declarations. Second, quantity units must match those in the contract and Certificate of Origin (for goods under preferential trade agreements, the unit of measurement must align with the Certificate of Origin). Third, the declared value must match the invoice and settlement figures (both under-declaration and over-declaration carry risks). Fourth, the license number must match the electronic license record.
Information must be truthful, complete, and accurate, and must align with accompanying documents and logistics data;
the declarant bears liability for any discrepancies challenged by Customs.
V. Practical Tips
It is recommended to establish a “one-file-per-order” system for customs declaration documentation. Key preliminary steps upon receiving an order include verifying the HS code, license requirements, and statutory inspection requirements. During the goods preparation phase, simultaneously compile the contract, invoice, and packing list. Before shipment, cross-check the cargo manifest against the bill of lading. Finally, complete the electronic authorization and declaration via the “Single Window” platform on the day of filing.
Ensuring that documentation is verified in advance and consistent across all items is essential for achieving a high first-time clearance rate. Industry experts note that errors in customs documentation rarely stem from the volume of paperwork but rather from inconsistencies between documents;
implementing a checklist-based review to ensure consistency is far more effective than scrambling to provide missing or corrected information at the last minute.
