China Customs is a government agency that supervises and manages all arrivals in and departures from the Customs territory of the mainland of the People's Republic of China.It exercises a centralized management structure.Its essential tasks are entry and exit control,revenue collection,fighting smuggling and foreign trade statistics compilation.It also shoulders such major responsibilities as duty collection,Customs control,supervision and management of bond operations,foreign trade statistics compilation,audit-based control,Customs intellectual property rights protection,anti- smuggling,and port management.