| Coagulants | Supplier |
| Poly aluminum chloride | Hanyu water chemical, Jiangsu |
| Poly ammonia | Wanshi environmental protection company, Shanghai |
| Poly ferric sulfate | Wanshi environmental protection company, Shanghai |
| Decolorizer | Xintai water treatment chemicals, Shandong |
| Polymer Polyacrylamide | Wanshi environmental protection company, Shanghai |