| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1694.53 | USD | 20251117 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1694.32 | USD | 20251114 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1693.36 | USD | 20251113 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1694.13 | USD | 20251112 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1693.34 | USD | 20251111 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1693.58 | USD | 20251110 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1700.42 | USD | 20251106 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1720.71 | USD | 20251105 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1735.2 | USD | 20251104 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1749.76 | USD | 20251103 |