... ROHS,ISO, aluminium alloy/Q235, all kinds: flat/channel iron,light,square,outdoor,etc 6years' exporter 15years' manufacturer all ... aluminium 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 ... ,China unicom,China telecom, etc.Sales:1billionRMB/year cable ladder