1.Product name :   Xingfa 2000 aluminum sliding door roller   2.Specification :  1) Application: Aluminum sliding door & window 2) Main material: Zinc or copper or aluminum or plastic,we can make it according to customer's requirements .  3) Surface treatment: Zinc plated/Anodize natural .  4) Operational life test: 50000 times strict tests .  5) Basic color:Silver .  6)MOQ:5000sets   3.Advantage :  1)  Durable and safe .   2) Strong productivity and fast delivery time .  3) European standard and OEM, Design service .  4) High quality and factory price