Export declaration refers to helping enterprises complete customs declaration procedures for export goods, including filling in customs declaration forms, providing required documents and certificates, and paying relevant taxes and fees. Import customs clearance is to help enterprises complete the customs clearance procedures of imported goods, including applying for import licenses, handling customs declaration procedures, paying relevant taxes and fees, inspection and quarantine, etc. International agency services can help enterprises to successfully complete these tedious procedures and ensure the smooth import and export of goods.