| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chem | Reagent Grade | MT | 57.47 | USD | 20250814 |
| Hunan Jianghai Env | China national standards | MT | 532.59 | USD | 20250813 |
| Hunan Jianghai Env | China national standards | MT | 123.34 | USD | 20250813 |
| Shandong Qiangsen Chem | China national standards | MT | 102.31 | USD | 20250813 |
| Shandong Laya Chem | Reagent Grade | MT | 57.46 | USD | 20250813 |
| Hunan Jianghai Env | China national standards | MT | 123.34 | USD | 20250813 |
| Hunan Jianghai Env | China national standards | MT | 123.22 | USD | 20250812 |
| Shandong Qiangsen Chem | China national standards | MT | 102.22 | USD | 20250812 |
| Hunan Jianghai Env | China national standards | MT | 532.08 | USD | 20250812 |
| Hunan Jianghai Env | China national standards | MT | 532.18 | USD | 20250811 |