| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 777.13 | USD | 20251209 |
| Shandong Qiangsen Chem | China national standards | MT | 777.23 | USD | 20251208 |
| Shandong Qiangsen Chem | China national standards | MT | 777.4 | USD | 20251205 |
| Shandong Qiangsen Chem | China national standards | MT | 777.57 | USD | 20251204 |
| Shandong Qiangsen Chem | China national standards | MT | 777.34 | USD | 20251203 |
| Shandong Qiangsen Chem | China national standards | MT | 776.9 | USD | 20251202 |
| Shandong Qiangsen Chem | China national standards | MT | 776.9 | USD | 20251202 |
| Shandong Qiangsen Chem | China national standards | MT | 777.29 | USD | 20251201 |
| Shandong Qiangsen Chem | China national standards | MT | 776.96 | USD | 20251129 |
| Shandong Qiangsen Chem | China national standards | MT | 776.96 | USD | 20251128 |