| Vendor | Spec | Unit | Price | Currency | Date |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 1060.03 | USD | 20251210 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1257.9 | USD | 20251210 |
| Qingdao Xupu Supply Chain Co., Ltd. | China national standards | MT | 1031.76 | USD | 20251210 |
| Shanghai Juexin Industrial Development Co., Ltd. | China national standards | MT | 1074.16 | USD | 20251210 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 1088.29 | USD | 20251210 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 1060.03 | USD | 20251210 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 1201.36 | USD | 20251210 |
| Shandong Tongzhou Chemical Co., Ltd. | China national standards | MT | 1412.97 | USD | 20251209 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1554.27 | USD | 20251209 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 1201.02 | USD | 20251209 |