| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 368.98 | USD | 20251013 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.08 | USD | 20251013 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 365.95 | USD | 20251011 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 368.76 | USD | 20251011 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 351.87 | USD | 20251011 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 365.95 | USD | 20251010 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 337.8 | USD | 20251010 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 351.87 | USD | 20251010 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 351.61 | USD | 20251009 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 365.67 | USD | 20251009 |