| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 712.71 | USD | 20251028 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 733.88 | USD | 20251028 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 705.66 | USD | 20251028 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 909.98 | USD | 20251027 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 747.73 | USD | 20251027 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 712.46 | USD | 20251027 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 733.62 | USD | 20251027 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 711.99 | USD | 20251026 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 711.99 | USD | 20251025 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 747.24 | USD | 20251024 |