| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 380.95 | USD | 20251123 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 380.95 | USD | 20251122 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.73 | USD | 20251121 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.73 | USD | 20251121 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 380.95 | USD | 20251121 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 344.27 | USD | 20251121 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.38 | USD | 20251120 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.58 | USD | 20251120 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 344.12 | USD | 20251120 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 380.79 | USD | 20251120 |