1, after the approval of the purchase (purchase) order;
2, the customer provides a delivery note (details);
3, if there is a contract, according to the contract content of the approved customer to provide the materials of the model, specifications, quality requirements, price and so on whether the contract is in line with the agreement;
4, need to do Incoming inspection or verification of the inspection or verification certificate, and inspection or verification of the conclusion that the quality is satisfactory.