| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 801.33 | USD | 20251013 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 690.07 | USD | 20251013 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 763.31 | USD | 20251013 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 732.32 | USD | 20251013 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 760.05 | USD | 20251011 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 689.67 | USD | 20251011 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 703.75 | USD | 20251011 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 731.9 | USD | 20251011 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 731.9 | USD | 20251010 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 703.75 | USD | 20251010 |