Zhejiang Dongchen electric control valve has high control precision, stable performance and reliable quality. Those pressure reducing valves have been successfully applied to various working conditions. Different control valves are formed according to the pressure, temperature, physical and chemical characteristics of different media. DOCN control valves are widely used in petroleum, chemical industry, light industry, pharmacy, papermaking, metallurgy, power generation and other industries, and play an important role in the process of automatic industrial instrument production system.