... the pier up and down, there are two type of Springboard (type A and type B),Type A is integral springboard, Type B is removable( ... aluminum ladder, Products comply with CB * 3116-82 standard, With a lightweight, secure , and high intensity.Technical requirements:l All of the aluminum ... Can widen or decrease according to the customer's requirements. Type A8 means: length 8m , wid 0.6m Integral aluminum ...