1.\tLadder is made of high strength cold-rolled carbon steel. Max loading up to 300kg. 2.\tLadder’s joint is using advanced riveted technology that is high strength. Therefore, walking is stable. 3.\tIron frame and door sheet is made of Russia Pine. Door sheet has a thickness of 30mm that is coated with varnish Bauhinia. 4.\tHardware accessories is spray by Ryoka and electrostatic under high temperature surface baking treatment. Thus, it’s look new for a longer time. 5.\tIt is retractable with high flexibility. The steps can be adjusted to suit storey’s height. 6.\tNice appearance, practical, ease in operation and simple installation