| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 726.32 | USD | 20251120 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 757.35 | USD | 20251120 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 733.38 | USD | 20251120 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 705.17 | USD | 20251120 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 832.49 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 733.72 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 712.55 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 719.61 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 705.66 | USD | 20251118 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 712.71 | USD | 20251118 |