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moc.gov.vnmoc.gov.vn/Images/editor/files/Quy Chuẩn/QCVN 04-2019...TCVN 6396-72:2010, Yêu cåu an toàn vè cåu tao và låp dat thang máy. Áp dung riêng cho thang máy chð
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