... ROHS,ISO, aluminium alloy/Q235, all kinds: flat/channel iron,light,square,outdoor,etc 6years' exporter 15years' manufacturer all kinds ... alloy or Q235 being galvanized or baking varnishedType: Flat iron: W:200,300,400,500,600,800,(mm),etc ... L:1500,2000,3000(mm),etc. Channel iron: W:200,300,400,500,600,800,(mm),etc ... L:1500,2000,2500(mm),etc. Light type: W: 400,(mm),etc L:2250,3000(mm ...