... as following:1, products name:Stainless steel hinge2, Material:Stainless steel, copper, aluminum, iron3, Surface ... treatment:Electroplating: gold-plated, copper-plated, and zinc-plated Spraying: golden, white, rice white, black, rice ... AA column, aluminum ladder column, stainless steel ladder column, stainless steel bracket. Carrying large stocks with great ...