... tray, all kinds of cable ladders being stamped out from aluminium alloy or Q235 with the surface being galvanized or baking varnishedCertificate ... : ROHS,MIL-C,CECC,IEC,MIL-CMaterial: aluminium alloy /Q235 being galvanized or baking varnished Stainless steel/FRP,etc ... ,300,400,(mm),etc L:1500,2000,3000(mm),etc. Aluminium alloy 34/45/50: W:200,300,400,500,600,800 ...