| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1756.49 | USD | 20251031 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1756.89 | USD | 20251030 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1757.41 | USD | 20251029 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1764.14 | USD | 20251028 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1763.52 | USD | 20251027 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1762.35 | USD | 20251024 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1775.8 | USD | 20251022 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1776.4 | USD | 20251021 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1831.68 | USD | 20251020 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1832.3 | USD | 20251017 |