| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Platinum Run Industry and Trade Technology Co., Ltd. | China national standards | MT | 571.66 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250816 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 504.41 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250815 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 616.5 | USD | 20250815 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 504.41 | USD | 20250815 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 700.56 | USD | 20250815 |