Donjoy was founded in 1993, with registered capital RMB105.58 million(about 15million USD) We focus on developing high-precision PID valve positioner, Valve Control unit, Valve Position feedback device, intelligent automatic control valve, proportional ......

...-low temperature refrigeration technology Constant current and constant voltage cooling technology Heat recovery refrigeration technology Variable PID flow control technology Self-priming oil and water return technology Safe intelligent control technology ...