EN 81-21:2009
电梯的建筑安装工程用安全规程.载人及载货电梯.第21部分:现有建筑物中新建客梯及客货两用电梯
Safety rules for the construction and installation of lifts - Lifts for the transport of persons and goods - Part 21: New passenger and goods passenger lifts in existing buildings (Incorporates Amendment A1: 2012)