| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 1483.91 | USD | 20251201 |
| Shandong Qiangsen Chem | China national standards | MT | 1483.28 | USD | 20251129 |
| Shandong Qiangsen Chem | China national standards | MT | 1483.28 | USD | 20251128 |
| Shandong Qiangsen Chem | China national standards | MT | 1483.49 | USD | 20251127 |
| Shandong Qiangsen Chem | China national standards | MT | 1483.13 | USD | 20251126 |
| Shandong Qiangsen Chem | China national standards | MT | 1482.51 | USD | 20251125 |
| Shandong Qiangsen Chem | China national standards | MT | 1482.07 | USD | 20251124 |
| Shandong Qiangsen Chem | China national standards | MT | 1481.48 | USD | 20251122 |
| Shandong Qiangsen Chem | China national standards | MT | 1481.48 | USD | 20251121 |
| Shandong Qiangsen Chem | China national standards | MT | 1481.48 | USD | 20251121 |