Hangzhou Jianghe Mechanical&Electrical Equipment Engineering Ltd. is mainly engaged in scientific research, development, design and manufacturing of the portal and gantry cranes and hoists for hydropower construction engineering. It has rich experiences in research and development more than 50 years, It has undertaken many national scientific research, export and foreign aid works. In recent years, the advanced technologies have been combined in new design concept to make the products structure to be optimized, stress distributing to be reasonable, operation to be stable and quick in operation. Many advanced technologies such as PLC control, series resistance control, frequency control etc. Have been adopted to make electrical control system to be artificial and intelligentized. Particularly, the design and manufacturing of cable cranes and portal cranes used in the construction and hoisting equipment of hydropower station such as dam gantry cranes, hoists and new overhead cranes for powerhouse are always in leading place in the domestic market.