Customs clearance is a crucial link in international logistics, requiring standardized and accurate documents. Basic documents include commercial invoices (clearly stating commodity names, HS codes, and declared values), packing lists, and bills of lading/air waybills, which must be consistent with each other and the actual goods. Special categories need additional certifications: food and cosmetics require quarantine certificates, electrical products with batteries need UN38.3 test reports, and branded goods require trademark authorization. Missing or incorrect documents may lead to cargo detention or fines
