| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1293.81 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 979.1 | USD | 20250731 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 965.12 | USD | 20250731 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 965.12 | USD | 20250731 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1174.92 | USD | 20250731 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.1 | USD | 20250731 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1174.92 | USD | 20250731 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 951.13 | USD | 20250731 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1014.07 | USD | 20250731 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 965.83 | USD | 20250730 |