| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.86 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.75 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.53 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 344.28 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.83 | USD | 20251118 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 344.36 | USD | 20251118 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.94 | USD | 20251118 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.6 | USD | 20251118 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.91 | USD | 20251117 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.03 | USD | 20251117 |