expanded mesh, made of superior quality steel sheets by incising and simultaneously expanding, has features of beautiful appearance, lightness in weight and good ventilation etc. materials: sheet in aluminum, mild steel, stainless steel, al-mg alloy, copper or nickel. process: punched into holes of diamond shape, square, round, triangle, scale hole. general use: with good strength, wear resistance and nice looking, expanded sheet metal mainly serves to construction of railway, roads, buildings; also protection of machines, electrical appliances, windows and acquatic products breeding packing: in rolls or in wooden pallet.