1.After the signing of the contract, Party A to Party B to pay 30% of the total contract price as a down payment, settlement arrived at to make a deposit contract; 2. Products Party arrived in the designated place of delivery, Party A to Party B to pay 40% of the total contract price, the B team to send to the site installation works. 3. Installed, the two sides qualified acceptance, Party A to Party B to pay the remainder of the purchase price, that is, 30% of the total contract price.