... working efficiency. 4. Application: (1)using for a high work platform,such as building,hall,bridge,viaduct,tunnel,etc. ( 2) ... inside and outside scaffolding fence. (3)using for movable work platform,such as electronic machinery,hull repairing and other decorating ... large scoreboard,large TV screen frame,light shelves,etc. (8)using for shipbuilding industry,military,civil aircraft maintenance industry ...