| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1048.47 | USD | 20250915 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1013.29 | USD | 20250915 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1013.81 | USD | 20250913 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1013.97 | USD | 20250909 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1013.67 | USD | 20250908 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1013.67 | USD | 20250908 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1013.17 | USD | 20250906 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1013.17 | USD | 20250905 |
| Jiangsu Youlixin Chemical Co., Ltd. | China national standards | MT | 1097.6 | USD | 20250905 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1013.17 | USD | 20250905 |