FUJIAN DONGNAN Piston Ring Manufacturing Co., LTD. Is a professional piston ring research and development, production ,sales as one of the enterprises.The company is located in quanzhou, the starting point of the maritime silk road. Since its establishment, the company has introduced internal-external copying lathe, high precision double end face grinding machine, surface grinding machine, molding grinding, repairing the mouth tick R slot machine, CNC machine tools, CNC, nc polishing, electroplating processing center, more working procedure and other advanced equipment, sophisticated testing equipment and perfect testing methods, and processing all kinds of single section, all kinds of oil ring, partial barrel ring, inside and outside the check ring,
