| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.26 | USD | 20250915 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 647.71 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.68 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.68 | USD | 20250913 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 647.71 | USD | 20250913 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 901.17 | USD | 20250913 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 901.31 | USD | 20250909 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 844.98 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.31 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 936.51 | USD | 20250909 |