... plastic. (2) Our telescopic ladder plastic parts never break, because we improve their toughness by special treatment. 3: Product capability. (1 ... pass professional inspection before leaving factory. (2) Each batch goods, We choose samples to pass the following test: Open telescopic ladder ... ,ETC. Multi-function telescopic step ladder(EN131/SGS,CE/EN131)(We also have 3.8m,3.2m,2.9m,2.6m ...