aluminum extension ladder 1.100% pure aluminum 210 years insured 3.professional ... team good service 4.CNC Maching Detail information for aluminum extension ladder Aluminum Alloy 6063 6005 6061Certificate: ISO9001/ISO14001, OHSAS 18001Surface ... : Drill hole, stretch bending, milling, welding, fabrication etc.Packing: aluminum extension ladder wrapped in plastic film, carton box, wooden crates or ...