The complete Contract includes all of the Contract Documents, to wit: A. VENDOR'S proposal dated January 12, 2016. The purpose of the CISG is to provide a modern, uniform and fair regime for contracts for the international sale of goods.This Goods Purchase Agreement ("Agreement") is entered into this 6th day of. An international sales contract is an agreement between a buyer and a seller that identifies the parties in the transaction, the goods or services being sold.