| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.48 | 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 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.34 | USD | 20251020 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.16 | USD | 20251020 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.15 | USD | 20251020 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.38 | USD | 20251020 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.46 | USD | 20251018 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.28 | USD | 20251017 |