Bonded warehouse bonded system is the most widely used form is specifically approved by the Customs Special warehouse for storage of bonded goods. Customs allows store bonded warehouse of goods has three class: a is for processing trade (into, and processing) processing finished complex export of imports material pieces; II is outside trade competent sector approved carried out foreign commodity consignment business, and foreign products maintenance business, and Exchange duty-free commodity business and the bonded production market of imports goods; three is transit trade goods and foreign left-goods and international sailing ship by needed of fuel, and real lining and spare parts,. Bonded warehouse-both public and private classes. Public bonded warehouses are established in accordance with the public needs, and available for anyone to store goods. Own bonded warehouse is the only warehouse operating personnel can store goods in the bonded warehouse, but does not have a warehouse of goods stored by all operators.