| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chem | China national standards | MT | 536.22 | USD | 20251111 |
| Shandong Hongyang Chem | China national standards | MT | 536.3 | USD | 20251110 |
| Shandong Hongyang Chem | China national standards | MT | 536.45 | USD | 20251107 |
| Shandong Hongyang Chem | China national standards | MT | 536.23 | USD | 20251106 |
| Shandong Hongyang Chem | China national standards | MT | 535.96 | USD | 20251105 |
| Shandong Hongyang Chem | China national standards | MT | 536.08 | USD | 20251104 |
| Shandong Hongyang Chem | China national standards | MT | 536.22 | USD | 20251103 |
| Shandong Hongyang Chem | China national standards | MT | 536.12 | USD | 20251031 |
| Shandong Hongyang Chem | China national standards | MT | 536.24 | USD | 20251030 |
| Shandong Hongyang Chem | China national standards | MT | 536.4 | USD | 20251029 |