| Chengdu Mingfa Fire Equipment Co., Ltd | 2013-06-07 | Plastic-Steel-Plastic Composite Pressure Pipe , Anti-Corrosion Steel Pipe, Steel Coated Plastic Pipe | 35000K CNY | Not Supported |
| Chongqing Xinkuancheng Materials Co., Ltd | 2023-06-02 | Plastic-Steel-Plastic Composite Pressure Pipe , Plastic-Coated Steel Pipe, Helical Ground Anchor | 18880K CNY | Not Supported |
| Guangdong Lecong Steel World Co., Ltd | 2009-03-25 | Plastic-Steel-Plastic Composite Pressure Pipe , Steel Pipe, Water Heating Valve | 11000K CNY | Supported |
| Tianjin Chenxin Tengfei Steel Co., Ltd | 2025-06-13 | Plastic-Steel-Plastic Composite Pressure Pipe , T-Shaped Steel, Galvanized Channel Steel | 5000K CNY | Supported |
| Tianjin Yuantai New Materials Co., Ltd | 2024-07-15 | Plastic-Steel-Plastic Composite Pressure Pipe , Galvanized Square Tube, Galvanized Pipe | 1000K CNY | Supported |
| Tianjin Yougang Metal Products Co., Ltd | 2023-02-24 | Plastic-Steel-Plastic Composite Pressure Pipe , Galvanized Rectangular Pipe, Stainless Steel Pipe | 100000K CNY | Supported |
| Tianjin Yougang Metal Products Co., Ltd | 2023-02-24 | Plastic-Steel-Plastic Composite Pressure Pipe , , Large Caliber Rectangular Tube | 100000K CNY | Supported |
| Tianjin Xinyu Iron and Steel Co., Ltd | 2019-12-20 | Plastic-Steel-Plastic Composite Pressure Pipe , Small Caliber Oxygen Blowing Tube, Non Standard Galvanized Pipe | 12000K CNY | Not Supported |
| Tianjin Yougang Supply Chain Co., Ltd | 2023-06-28 | Plastic-Steel-Plastic Composite Pressure Pipe , Galvanized Seamless Pipe, Hot-Dip Plastic Coated Steel Pipe | 100000K CNY | Supported |
| Tianjin Yougang Supply Chain Co., Ltd | 2023-06-28 | Plastic-Steel-Plastic Composite Pressure Pipe , Plastic-Coated Pipe, Plastic-Lined Pipe | 100000K CNY | Supported |