| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.72 | USD | 20251204 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 325.17 | USD | 20251204 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.34 | USD | 20251203 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.6 | USD | 20251203 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.6 | USD | 20251203 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.34 | USD | 20251203 |