1. NPR + GOETZE piston ring technic & produce line
2. ISO9002/ QS9000/ VDA6. 1 certificate for pis
2. ISO9002/ QS9000/ VDA6. 1 certificate for pis
1. NPR + GOETZE piston ring technic & produce line
2. ISO9002/ QS9000/ VDA6. 1 certificate for piston rings
3. OEM supplier for many domestic engine factories