| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 102.72 | USD | 20250905 |
| Hunan Jianghai Env | China national standards | MT | 534.73 | USD | 20250905 |
| Shandong Qiangsen Chem | China national standards | MT | 102.74 | USD | 20250904 |
| Hunan Jianghai Env | China national standards | MT | 534.82 | USD | 20250904 |
| Shandong Qiangsen Chem | China national standards | MT | 102.66 | USD | 20250903 |
| Hunan Jianghai Env | China national standards | MT | 534.4 | USD | 20250903 |
| Shandong Laya Chem | Reagent Grade | MT | 57.67 | USD | 20250902 |
| Hunan Jianghai Env | China national standards | MT | 123.79 | USD | 20250902 |
| Shandong Qiangsen Chem | China national standards | MT | 102.69 | USD | 20250902 |
| Hunan Jianghai Env | China national standards | MT | 534.54 | USD | 20250902 |