Anhui Water Conservancy Development Co., Ltd. is a listed company with seven first-class qualifications in Anhui water conservancy industry (stock code: 600502). Its subordinate enterprise, Metal Structure Electromechanical Equipment General Factory, is a manufacturer specializing in manufacturing metal structures and supplying and installing complete sets of equipment. It has the use license of large herringbone steel gate, large arc steel gate, large plane fixed wheel, large plane sliding block steel gate, medium-sized hoist and medium-sized mobile hoist, the construction ability certificate of hydraulic metal structure anticorrosion specialty of Ministry of Water Resources, and the production license of medium-sized penstock. There are two production lines with large lifting capacity and advanced technology, which make the blanking, manufacturing, assembly, welding, boring and drilling and anticorrosion of the gate form an assembly line. On the 1# main production line, a 30t gantry crane and four 5t cranes are configured. On the 2# main production line, a 25t gantry crane and four 5t traveling cranes are equipped. The gate is convenient, flexible, safe and efficient to lift, carry and overturn in the production process. It has a 3000m2 hoisting workshop, advanced welding, blanking, single-piece production, calibration equipment and various testing equipment, and its professionals are skilled. In August, 2003, a 7500m2 metal structure workshop was completed and put into operation, and advanced equipment such as CNC cutting machine, end face milling machine, section steel assembling machine, edge milling machine, automatic submerged arc welding with portal, flange straightener and so on were purchased, with an annual production capacity of 9000t. In recent ten years, our factory has produced and installed more than 2,000 large and small gates and more than 300 hoists for more than 0/00 projects. Among them, Daguanzhuang Sluice Project in Shandong Province was rated as a Ministry-excellent project, the metal structure fabrication of Huai 'an Interchange Hub Project of Huaihe River into the sea won the "2005 China Water Conservancy Project Quality Award" and "2005 National High-quality Project Silver Award", Guzhen Sluice Project and Hexiang Sluice Hub Project won the "Huangshan Cup", the West Lake Sluice Safety Project in Linhuaigang City and the electromechanical installation project of Bengbu Zhihuai Pumping Station were rated as provincial-excellent projects, and won more than 30 titles of high-quality projects.