Our company is a professional manufacturer of all kinds of thermostatic expansion valve. Our production have been tested and appraised by the state authority organ, and also we have been approved by ISO9001: 2000 authentication. The American, Japanese and international technical standards for auto air conditioners are currently applied by the company to control quality of expansion valves for all kinds of vehicles. With steady and reliable quality, our productions are well marketed in U.S., west European and Southeastern Asia countries.