BS EN 81-22:2021
跟蹤更改 電梯建造和安裝的安全規則 用于運輸人員和貨物的電梯 具有傾斜運行路徑的乘客和貨物乘客電梯
Tracked Changes. Safety rules for the construction and installation of lifts. Lifts for the transport of persons and goods. Passenger and goods passenger lifts with inclined travel path