Jacton Electromechanical Co., Ltd. manufactures and supplies complete hand crank table lift mechanisms that include screw jacks, crank handles, couplings, linking bars, and other components. Their mechanisms are available in lifting capacities from 1 to 5 tons and they work with customers to design customized solutions based on the required table size, load, and lift height. Their screw jacks feature self-locking acme screws and precise positioning without the need for additional braking or locking systems.