| Zhejiang Best Plastics Co., Ltd. |
| Zhejiang Eastern Hobas Pipes Co. |
| Zhejiang Hailiang International Trade Co., Ltd. |
| Zhejiang Hangbao Group Co., Ltd. |
| Zhejiang Huadong Steel Pipes Manufacture Co., Ltd. |
| Zhejiang Jinyu Fengye Pipe Co., Ltd. |
| Zhejiang Lin'an Kaiyuan FRP Co., Ltd. |
| Zhejiang Linhai Guohai Forging Co., Ltd. |
| Zhejiang Lixue Steel Pipe Co., Ltd. |
| Zhejiang Metals & Minerals Imp. & Exp. Corp. |
| Zhejiang Nanxin Plastic Cement Co., Ltd |
| Zhejiang Sanfeng Imports & Exports Co., Ltd. |
| Zhejiang Wins Machinery Co. Ltd. |
| Zhejiang Yide New Piping Co., Ltd. |
| Zhejiang Yonggao Plastic Industry Development Co., Ltd. |
| Zhejiang Yongkang Pearl Precision Casting Co., Ltd. |
| Zhejiang Yongya Copper Industrial Co., Ltd. |
| Zhejiang Yueding Corrugated Tube Co., Ltd. |
| Zhejiang Yuyao Yangzi Pipe Co., Ltd |
| Zhejiang Zhongcai Merchants Investment Group Co., Ltd. |
