There are four series of hoists, including QP series flat gate winch hoist, QPK series winch fast gate hoist, QH series radial gate hoist, and QL direct coupled screw hoist. Equal distribution of single and double lifting points, single and centralized drive, and dual use of hand cranking (with winch hoist below 2X250KN) and electric. Various types of machinery are widely used for the opening and closing of flat gates, radial gates, and rapid gates in electrical, shipping, urban water supply and drainage, flood discharge, sewage treatment, aquaculture, and agricultural water conservancy construction projects. Medium sized flat wheel gate and medium sized radial gate. Variety, reliable performance.