| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.51 | USD | 20251017 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.36 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.18 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.18 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.41 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.05 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.22 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.04 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.27 | USD | 20251015 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.09 | USD | 20251014 |