PROJECT ENGINEERING
Author: LINVOL Time: 9/27/2019 10:54:46 AM Pageviews:
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Utility model patent certificate (protective cover device for reducing wind noise of elevator fan)
Invention patent certificate (mechanical lock of lever elevator car door)
WT1-BS_CA604_180111_en_signed_00
TUV ISO 25745 LTK2000-4m
TUV ISO 25745 LTHX4000-2m
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