The data of suspension mechanism: Rated extension of front beam 1300mmRated suspending load 500KG, 630KG, 800KGDistance from bottom of suspendingretractile beam to ground 1200mm 1800mmMaximal distance between front andrear bracket 4600mm The height of the platform can be adjusted within 1200 1800mm with arm which can be stretched out and draw back. It can be widely used parapet wall and complicated building in different height and aslo can be designed and fabricated additionally in accordance with various working conditions.