Material is qualitative lightsome, receive easily, aluminium alloy material is qualitative more be at ease, the characteristic is bulk small, whole is more solid, stretch systole to be collected easily quickly, suit family and company to use very much. Aluminium alloy is adjustable and versatile ladder, aluminium alloy equilateral is adjustable the characteristic is bulk small, whole is more solid, go also shaking on adult station do not shake, receive easily in the home, from now on altitude fetch, change bulb, became the issue of relaxed be nothing difficult. Vintage ladder time grew to degenerate not strong, this versatile ladder is good with stronger, but adjustable and easy carry, reside an extension ladder of necessary aluminium alloy child. Convenient and convenient, can fold, clear away very simple. Choose add thick stainless steel material is qualitative, wear-resisting is able to bear or endure blow, never be out of shape, all show high-grade character sense. Open systole to be received easily quickly.