| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.83 | USD | 20251028 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.76 | USD | 20251028 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 374.0 | USD | 20251028 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.7 | USD | 20251027 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.63 | USD | 20251027 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.7 | USD | 20251027 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.39 | USD | 20251025 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.57 | USD | 20251024 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.62 | USD | 20251024 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.37 | USD | 20251024 |