... steel heavy duty hinge 1, Material: SUS 316/304/301/202/201 2, Size: 5"x5"*3.0mm 3, Finish: SSS,PSS, PVD Stainless steel heavy duty ... the foreign customers with our great variety of first-rate quality products, novel design and good services. We passed ISO9001: ... processes, so we can keep improving product quality. There are strict processes and quality manages to make sure the products keep updated ...