Zhengzhou Zhongnan Valve Co., LTD. (37 taona) i luwawanu mu sadila kisalasala kio kia A1. Luwawanu mu sadila kisalasala kio luwawanu mu sadila kisalasala kio luwawanu mu sadila kisalasala kio Bikonko bisoneka biampimpita nkatu • luwawanu mu sadila kisalasala kio CrMol (1) • lundombe luwawanu Luwawanu mu sadila kisalasala kio luwawanu mu sadila kisalasala kio • Luwawanu mu sadila kisalasala kio luwawanu ye luwawanu 1.0MPa-10MPa Kiantunga bisalasala, nkubukulu a busampanu, bisalasala biampimpita, biampimpita ye biangolo biampimpita ye biangolo biampimpita, luwawanu mu sadila kisalasala kio Zhengzhou Zhongnan Valve Co., Ltd is first enterprise passing 1S09001 2000 International Quality System Certification. Zhengzhou Zhongnan Valve Co.