| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 1061.03 | USD | 20251211 |
| Shandong Qiangsen Chem | China national standards | MT | 1060.03 | USD | 20251210 |
| Shandong Qiangsen Chem | China national standards | MT | 1059.73 | USD | 20251209 |
| Shandong Qiangsen Chem | China national standards | MT | 1059.86 | USD | 20251208 |
| Shandong Qiangsen Chem | China national standards | MT | 1060.09 | USD | 20251206 |
| Shandong Qiangsen Chem | China national standards | MT | 1060.09 | USD | 20251205 |
| Shandong Qiangsen Chem | China national standards | MT | 1060.33 | USD | 20251204 |
| Shandong Qiangsen Chem | China national standards | MT | 1060.01 | USD | 20251203 |
| Shandong Qiangsen Chem | China national standards | MT | 1059.41 | USD | 20251202 |
| Shandong Qiangsen Chem | China national standards | MT | 1059.94 | USD | 20251201 |