| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.56 | USD | 20251106 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.95 | USD | 20251106 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.4 | USD | 20251105 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.76 | USD | 20251105 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.5 | USD | 20251105 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.58 | USD | 20251104 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.58 | USD | 20251104 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.47 | USD | 20251104 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.84 | USD | 20251104 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.94 | USD | 20251103 |