| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.91 | USD | 20251129 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.42 | USD | 20251128 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.91 | USD | 20251128 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.16 | USD | 20251128 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.21 | USD | 20251127 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.21 | USD | 20251127 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.47 | USD | 20251127 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.96 | USD | 20251127 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.13 | USD | 20251126 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.38 | USD | 20251126 |