| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.39 | USD | 20251024 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.67 | USD | 20251023 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.44 | USD | 20251023 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.62 | USD | 20251023 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.43 | USD | 20251022 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.48 | USD | 20251022 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.25 | USD | 20251022 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.38 | USD | 20251021 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.61 | USD | 20251021 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.56 | USD | 20251021 |