| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 777.07 | USD | 20251127 |
| Shandong Qiangsen Chem | China national standards | MT | 776.88 | USD | 20251126 |
| Shandong Qiangsen Chem | China national standards | MT | 776.55 | USD | 20251125 |
| Shandong Qiangsen Chem | China national standards | MT | 776.32 | USD | 20251124 |
| Shandong Qiangsen Chem | China national standards | MT | 776.01 | USD | 20251122 |
| Shandong Qiangsen Chem | China national standards | MT | 776.01 | USD | 20251121 |
| Shandong Qiangsen Chem | China national standards | MT | 776.01 | USD | 20251121 |
| Shandong Qiangsen Chem | China national standards | MT | 775.69 | USD | 20251120 |
| Shandong Qiangsen Chem | China national standards | MT | 776.05 | USD | 20251119 |
| Shandong Qiangsen Chem | China national standards | MT | 776.22 | USD | 20251118 |