... visit our website and our factory. 1: Aluminum material (1) All of our aluminum material are bought from large state-owned ... . (2) All of our aluminum material are made of 100% aluminum ingots. Never use recycle aluminum. (3) Aluminum alloy: 6063/T5.Thickness :1 ... POLAND,FINLAND,NORWAY, SOUTH AFRICA ,TURKEY, SOUTH KOREA,JAPAN,ETC. Multi-function telescopic step ladder(EN131/SGS,CE/EN131)(We also have ...