... hinge,lift-off hinge,ball-bearing hinge,flush hinge,nylon and steel ring hinge,six-finger hinge,door cabinet hinge,australian hinge ... :hasps are made of copper, aluminum, zinc, iron,stainless steel and other materials.bronze, nickel, chromium, color of the surface maybe ... , durably , not change color.08. We have strong technology power and engineer terms, Provided that the blueprint or sample , we can ...