... and down, there are two type of Springboard (type A and type B),Type A is integral springboard, Type B is removable(Facilitate collection). ... of the ladder,Two stepping load 75Kg of pressure,After unloading,No permanent deformation.l Standard configuration of ladderl Ladder (Movable ... Can widen or decrease according to the customer's requirements. Type A8 means: length 8m , wid 0.6m Integral aluminum ...