US Customs tightens origin tracing for electronics and EV components shipped from South China

US Customs and Border Protection has tightened origin-documentation checks for electronics and electric-vehicle components exported from South China. Importers should expect more frequent requests for bills of materials, factory records, and traceability evidence demonstrating substantial transformation. Shipments relying solely on third-party trading-company paperwork face higher scrutiny and potential delays at port. Recommended action: review your supplier's origin documentation before booking, and keep production and sourcing records available for the full clearance window.