Customs, refers to the governmental authority responsible for regulating the movement of goods across international borders. Customs agencies enforce import and export regulations, including tariffs, duties, and documentation requirements, to ensure compliance with trade laws and facilitate the smooth flow of goods. In container shipping, customs clearance is a crucial step where customs officials verify the contents of containers, inspect documentation, and assess duties and taxes before allowing the shipment to enter or leave a country. Efficient customs procedures are essential for minimizing delays and ensuring the timely delivery of goods in international trade.