China Vervo Valve Manufacturer Co., Ltd is a leading comprehensive valves manufacturer of ball valves,globe valves, check valves, gate valves, butter-fly valves, plug valves etc, in China. We are specialized in producing world class valves. It owns a 15,000㎡ covered workshops and is equipped with many advanced production lines.Till now it is certified with API 6D, API 6FA, API 6A, API 60