| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chem | China national standards | MT | 536.88 | USD | 20251127 |
| Shandong Hongyang Chem | China national standards | MT | 536.75 | USD | 20251126 |
| Shandong Hongyang Chem | China national standards | MT | 536.16 | USD | 20251121 |
| Shandong Hongyang Chem | China national standards | MT | 535.93 | USD | 20251120 |
| Shandong Hongyang Chem | China national standards | MT | 536.18 | USD | 20251119 |
| Shandong Hongyang Chem | China national standards | MT | 536.3 | USD | 20251118 |
| Shandong Hongyang Chem | China national standards | MT | 536.6 | USD | 20251117 |
| Shandong Hongyang Chem | China national standards | MT | 536.53 | USD | 20251114 |
| Shandong Hongyang Chem | China national standards | MT | 536.23 | USD | 20251113 |
| Shandong Hongyang Chem | China national standards | MT | 536.47 | USD | 20251112 |