YuYao HuanGong Automatic Instrument Factory is established in May 2000, when yuyao Instrument General Factory had the enterprise system reforming, its predecessor is Ningbo Shunyuan Automatic Instrument Co., Ltd.
　　The enterprise mainly produce all kinds of pressure transmitters, temperature transmitters and level transmitters. Products get supports from State Science and Technology Commission from designing , opening up to succeed and State Science and Technology Commission had invested more than 6 million RMB, and invited domestic expert and academician, etc, academy of sciences of Russia to develop jointly. With the constant renovated and perfected by the enterprise oneself afterwards, the company has developed a series of steady and reliable, good and cheap, being suitable for kinds of industrial automation observe and control pressure transmitter, temperature transmitter and level transmitter, which has become a professional factory producing transmitter.
　　The products have applied to the trades extensively, such as: petroleum, chemical industry, metallurgy, environmental protection, light industry, medicine, national defense, shipping, spaceflight, hydro power station operate and patrol examine, hydraulic pressure, air pressure system etc. The products had been sold to many countries, Yangzi Petrochemical Industry and Zhenhai Refining internal large-scale enterprises also use products from the company.