We purchase the steel from well-knowned steel factory so to ensure the stability of the material's quality. When the material arrives, we will do strict inspection before our bulk production. For the new item developed by customers, we can make the counter-samples for confirmation. Bulk production starts, after we got the confirmation. When the initial workpiece come out, overall inspection will be done including the size, hardness and the various mechanical test. After the initial workpiece pass the inspection, we will arrange the bulk production and record all the inspection for every procedure. Before shipment, we will make casual inspection (full inspection if needed) for the finished items to ensure the conformity of the goods.