| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 325.07 | USD | 20251203 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.39 | USD | 20251202 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.89 | USD | 20251202 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.39 | USD | 20251202 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 325.05 | USD | 20251201 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.31 | USD | 20251201 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.31 | USD | 20251201 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.42 | USD | 20251130 |