Material: FRP. Packing: standard export carton.HK series ladder is a kind of originative ladders made from new compound material(fiberglass-reinforced plastics). This product is portable and retractable, andhas low water absorptive rate, corrosion-resistance, aging resistance, rotten-resistanceand good insulation. Applicable for safe living-wire work, it is a kindof perfect tools for telecommunication, power supply and other industries. producing area:China