| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 731.48 | USD | 20250929 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 779.3 | USD | 20250929 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 780.02 | USD | 20250928 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 740.67 | USD | 20250928 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 730.83 | USD | 20250928 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 829.21 | USD | 20250928 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 688.67 | USD | 20250927 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 730.83 | USD | 20250927 |
| 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 |