Article 157. The Content and Application of the Customs Procedure of Free Warehouse, the Terms for Placement of Goods under the Customs Procedure, and the Use Thereof in Accordance with Such Procedure, the Effective Term of the Customs Procedure, the Appearance and Termination of the Duty to Pay Import Customs Duties, Taxes, Safeguard, Anti-Dumping and Countervailing Duties, the Term for the Payment Thereof and the Calculation