| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.68 | USD | 20250914 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 647.71 | USD | 20250914 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 901.17 | USD | 20250913 |
| Shandong Fushengyong Trading Co., Ltd. | Industrial Grade | MT | 901.17 | USD | 20250913 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 844.84 | USD | 20250913 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 647.71 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.68 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.81 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 816.81 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 816.81 | USD | 20250909 |