... Gondola Length:2000-4000mm 4 Safety Load<500kgs Building Maintenance Unit is a Permanently Installed Suspended Access Equipment ... of Glass Curtain Wall of high-rise building. Building Maintenance Unit / Cleaning machine Verified Information This information is Verified ... Actual Units Produced(Previous Year) Suspended Platform, Building Maintenance Unit, Aerial Operation Platform 16,224 Sets/Year 1 ...