| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Jinmao Alum | China national standards | MT | 1648.4 | USD | 20260309 |
| Dongying Huatai Chem | China national standards | MT | 1648.4 | USD | 20260309 |
| Shandong Jinling | China national standards | MT | 1648.4 | USD | 20260309 |
| Shandong Jinling | China national standards | MT | 1492.21 | USD | 20260306 |
| Dongying Jinmao Alum | China national standards | MT | 1492.21 | USD | 20260306 |
| Dongying Huatai Chem | China national standards | MT | 1434.64 | USD | 20260305 |
| Dongying Jinmao Alum | China national standards | MT | 1434.64 | USD | 20260305 |
| Shandong Jinling | China national standards | MT | 1434.64 | USD | 20260305 |
| Shandong Jinling | China national standards | MT | 1403.28 | USD | 20260304 |
| Dongying Jinmao Alum | China national standards | MT | 1403.28 | USD | 20260304 |