| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Jinmao Alum | China national standards | MT | 1153.9 | USD | 20260109 |
| Shandong Jinling | China national standards | MT | 1153.9 | USD | 20260109 |
| Dongying Huatai Chem | China national standards | MT | 1153.9 | USD | 20260109 |
| Dongying Huatai Chem | China national standards | MT | 1153.9 | USD | 20260109 |
| Dongying Jinmao Alum | China national standards | MT | 1123.26 | USD | 20251229 |
| Shandong Yihe Chem | China national standards | MT | 1075.18 | USD | 20251211 |
| Jinan Aochen Chem | China national standards | MT | 1556.18 | USD | 20251211 |
| Shandong Aite Chem | China national standards | MT | 1160.06 | USD | 20251211 |
| Jinan Aochen Chem | China national standards | MT | 1556.18 | USD | 20251211 |
| Shandong Aite Chem | China national standards | MT | 1160.06 | USD | 20251211 |