| Hebei Bangzhu Building Materials Co., Ltd | 2021-05-24 | Cement Trench Cover Plate, Cable Conduit, Concrete Water Channel | 3000K CNY | Supported |
| Sanhe Guanzhong Huayun New Building Materials Factory (Individual Industrial and Commercial Household) | 2015-01-04 | Cement Trench Cover Plate, Overboard Board, Cement Pipe | - | Supported |
| Yunnan Guowan Building Materials Co., Ltd | 2022-03-28 | Cement Trench Cover Plate, Water Grates, Hexagonal Brick | 1000K CNY | Not Supported |
| Baoding Shuangcheng Building Materials Co., Ltd | 2021-03-26 | Cement Trench Cover Plate, Cement Cover Plate, Glass Reinforced Plastic Septic Tank | 5000K CNY | Supported |
| Baoding Senkai Building Materials Co., Ltd | 2022-01-20 | Cement Trench Cover Plate, Cable Tray, Well Circle | 300K CNY | Supported |
| Baoding Xiongtuo Building Materials Manufacturing Co., Ltd | 2022-06-15 | Cement Trench Cover Plate, Concrete Well Cover Plate, Reinforced Cement Prefabricated Cover Plate | 200K CNY | Not Supported |
| Nanchang Hengsheng Cement Products Co., Ltd | 2017-10-19 | Cement Trench Cover Plate, Ceramic Permeable Brick, Drainage Flat Mouth Cement Pipe | 1000K CNY | Not Supported |
| Harbin Nongken Wanda Cement Products Co., Ltd | 2017-06-30 | Cement Trench Cover Plate, Cement U-Shaped Groove, Dutch Bricks | 1000K CNY | Supported |
| Junkui Cement Products Co., Ltd., Fengrun District, Tangshan City | 2022-06-17 | Cement Trench Cover Plate, Inspection Chamber | 3000K CNY | Not Supported |
| Tianjin Huacai Cement Components Co., Ltd | 2011-03-23 | Cement Trench Cover Plate, Cable Pit, Prefabricated Rainwater Collection Tank | 2000K CNY | Not Supported |