| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 102.77 | USD | 20250829 |
| Hunan Jianghai Env | China national standards | MT | 534.99 | USD | 20250829 |
| Hunan Jianghai Env | China national standards | MT | 123.89 | USD | 20250829 |
| Shandong Laya Chem | Reagent Grade | MT | 57.72 | USD | 20250829 |
| Shandong Laya Chem | Reagent Grade | MT | 57.7 | USD | 20250828 |
| Shandong Laya Chem | Reagent Grade | MT | 57.7 | USD | 20250828 |
| Hunan Jianghai Env | China national standards | MT | 123.83 | USD | 20250828 |
| Hunan Jianghai Env | China national standards | MT | 534.74 | USD | 20250828 |
| Shandong Qiangsen Chem | China national standards | MT | 102.73 | USD | 20250828 |
| Shandong Qiangsen Chem | China national standards | MT | 102.66 | USD | 20250827 |