1. EN 131 Part 1:2007 & BS EN 131 Part 2:1993 Ladders - Specification for terms, types, functional sizes & Ladders - Specification for requirements, testing, marking 梯子
    
    2. BS EN 14183:2003 Step Stools 脚踏凳
    
    3. BS 2037:1994 Specification for Portable aluminium ladders, steps, trestles and lightweight stagings 便携式铝梯
    
    4. BS 7553 :1992 Specification for Loft Ladders 阁楼梯子 Note: The BS 7553 has been replaced by BS EN 14975:2006.
    
    5. BS EN 14975 :2006 Loft ladders —Requirements, marking and testing 阁楼梯子
    
    6.EN 131-3:2007 Ladders - Part 3: User Instructions
    
    7.EN 131-4:2007 Single or Multiple hinge-joint ladders