1. Suzhou xinwei valve co., ltd.
2. Shanghai Zhong Qi Valve Manufacturing Co., Ltd.
3. Shanghai Guanlong Valve Energy Saving Equipment Co., Ltd..
4. Sanhua Holding Group Limited by Share Ltd
5. Chaoda Valve Group Co., Ltd.
6 Jiangsu Shentong Valve Co., Ltd.
7.CNNC sufa technology co., ltd
8. Zhuzhou South Valve Co., Ltd..
9. Jiangnan Valve Co., Ltd.
10. Hebei yuanda valve group co., ltd.
These valve brands are world-renowned and powerful valve manufacturers and suppliers, with a broad customer base and market share. Of course, with the changes in the market and the constant changes in consumer demand, the ranking may also change.