lowayker 发表于 2016-12-13 16:42:11

EN 81-20-2014 Safety rules for the construction and installation of lifts - Lift

Safety rules for the construction and installation of lifts - Lifts for the transport of persons and goods - Part 20: Passenger and goods passenger lifts

admin 发表于 2016-12-14 12:07:09

谢谢您的分享,金币已奖励!
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