| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260525 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260515 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260506 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260427 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260421 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260420 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260416 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260410 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260408 | |
| Yankuang Guotai Chem | China national standards | MT | USD | 20260401 |