| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Yulin Chem | China national standards | MT | 386.1 | USD | 20260423 |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260408 | |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260331 | |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260326 | |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260317 | |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260305 | |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260304 | |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260224 | |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260209 | |
| Yankuang Yulin Chem | China national standards | MT | USD | 20260130 |