| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 743.48 | USD | 20250926 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 730.83 | USD | 20250926 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 674.61 | USD | 20250926 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 675.51 | USD | 20250925 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 736.03 | USD | 20250925 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 689.59 | USD | 20250925 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 703.66 | USD | 20250925 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 731.81 | USD | 20250925 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 830.32 | USD | 20250925 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 731.81 | USD | 20250924 |