... lifting&Leg bending. 2,ABS head and foot boards formed by injection molding. 1,Function:High-low lifting&Back ... coating.3,One-off forming of carbon-steel bed plate,great strength ,large air-bleed hole design ... ,well-ventilated.4,ABS head and foot boards formed by injection molding, ... ,low noise,waterproof and dustproof.7,With manual function,it will not affect the use of state ...