ROHS,ISO, aluminium alloy/Q235, all kinds: flat/channel iron ... being stamped out from aluminium alloy or Q235 with the surface being galvanized or baking varnishedMaterial: aluminium alloy or Q235 ... 400,(mm),etc L:1500,2000,3000(mm),etc. Aluminium alloy 34/45/50: W:200,300,400, ... than othersService:free samples regularly new product catalogue with price a full range of products,can purchase all ...