telescopic ladder multi-purpose ladder extension ladder loft ladder scaffolding ladder telescopic ladder,multi-purpose ladder,extension ladder,loft ladder,scaffolding ladder.ITEM NO.HEIGHTFOLD SIZEN.WG.W20FT40FT40HQAL-019-3.8D3. ... passed BSCI. Our telescopic ladder have passed EN131/SGS,GS/TUV. Our telescopic ladder material have passed PAHS,REACH. Our telescopic ladder have OWN PATENT. ...