| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.18 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.22 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.05 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.27 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.04 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.09 | USD | 20251014 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.13 | USD | 20251014 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 368.9 | USD | 20251014 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.16 | USD | 20251013 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 368.98 | USD | 20251013 |