Wenzhou Zhengyi Ceramic Valve Core Manufacturing Co Ltd was founded in 1995,which is a leading manufacturer of micro-section of china, valve core of china and sealed unit of machine in China. The company has over 100 staffs and the occupancy area of factory building covers 1685M2. We hold the top quality, diligent and innovation, which have been making us developed rapidly. The company has established the quality system and maintains the credit of ISO9002 which was conferred by France International Quality Verification (BVQI). In 2003
