| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.24 | USD | 20251209 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.98 | USD | 20251209 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 367.37 | USD | 20251209 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.55 | USD | 20251208 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 367.42 | USD | 20251208 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.29 | USD | 20251208 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 325.02 | USD | 20251208 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.63 | USD | 20251207 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 325.09 | USD | 20251205 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |