
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 BUILDING
出版:Belgian Standards

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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 BUILDING
出版:Belgian Standards
專家解讀視頻