| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 829.49 | USD | 20250919 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 773.72 | USD | 20250918 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 689.32 | USD | 20250918 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 745.59 | USD | 20250918 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 675.25 | USD | 20250918 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 703.38 | USD | 20250918 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 731.52 | USD | 20250918 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 829.99 | USD | 20250918 |