GRANDE-TEK FLOW CONTROL CO.,LTD. has been established in 1996. We are a manufacturer of ball valves and fittings for 27 years. 800 workers, 6700 ㎡ workshop. The company has ISO, CE &PED, 16949, API 6D&607&608, ATEX, SIL2, ISO14001&45001, DVGW, TS, watermark certificates.