| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 773.49 | USD | 20250922 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 703.18 | USD | 20250922 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 738.33 | USD | 20250922 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 689.11 | USD | 20250922 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 731.3 | USD | 20250922 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 675.05 | USD | 20250922 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 829.75 | USD | 20250922 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 731.08 | USD | 20250920 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 702.96 | USD | 20250920 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 674.84 | USD | 20250920 |