... 5Lifting speed:4-6m/min ApplicationsThey are widely used in factories, Star Hotels, restaurants, railway stations, ... strength aluminum alloy high-quality aluminum alloy, beautiful in appearance, small size, light weight, lifting balance ... not less than 200MM). Rotate the handle screw in the end of the four legs so tightly ... support.4,)We should adjust the four screw to support to support feet firmly on ...