Huangong Automatic Instrument Factory, mainly produdce pressure transmitter, temperature transmitter, submersible hydrostatic level transmitter and so on. We start to develop products since 1990, and at the year of 1996, we put the products into market. 2001 Huangong Automatic Instrument Factory was established. The enterprise has been passed ISO9001:2000 certification, and many products also have CE certification and Explosion-proof certification. Our products has been exported to many country, even all over the world. Now we intend to develop more products, and make our company erter the international market.