Zhejiang Yongsheng Instrumentation Co., Ltd has been officially changed to Zhejiang Yongsheng Technology Co., Ltd. since July 1st 2015 . It is a professional corporation specializing in developing and manufacturing instruments of industrial control valves. Our company is a state approved A Class manufacturer of pressure pipe components; National Support for High-tech Enterprise; State Torch Program Units; and is superior supplier of Sinopec, CNPC, CNOOC and other important national oil and chemi