| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.91 | USD | 20251117 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 367.1 | USD | 20251115 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.74 | USD | 20251115 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 367.1 | USD | 20251114 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.98 | USD | 20251114 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.74 | USD | 20251114 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.86 | USD | 20251114 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.78 | USD | 20251113 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.89 | USD | 20251113 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.56 | USD | 20251113 |