... material 4.Self-color finish 5.Spring design Stainless steel door hinge Name of productspring hinge,hingeWebsitewww.wj23 ... .cn or www.wj23.comMaterial Stainless steel or as customer’s requestSurface finishself-colorTrade termsEx- ... in world market,we promise.4. Using different raw material: stainless steel 201, 430, 304, 316, brass, aluminum, SECC, Q235, iron ( ...