| Vendor | Spec | Unit | Price | Currency | Date |
| Hunan Jianghai Env | China national standards | MT | 123.88 | USD | 20250911 |
| Shandong Qiangsen Chem | China national standards | MT | 102.77 | USD | 20250911 |
| Hunan Jianghai Env | China national standards | MT | 534.96 | USD | 20250911 |
| Hunan Jianghai Env | China national standards | MT | 123.84 | USD | 20250910 |
| Shandong Qiangsen Chem | China national standards | MT | 102.73 | USD | 20250910 |
| Shandong Laya Chem | Reagent Grade | MT | 57.7 | USD | 20250910 |
| Hunan Jianghai Env | China national standards | MT | 534.74 | USD | 20250910 |
| Shandong Laya Chem | Reagent Grade | MT | 57.74 | USD | 20250909 |
| Hunan Jianghai Env | China national standards | MT | 123.93 | USD | 20250909 |
| Hunan Jianghai Env | China national standards | MT | 535.15 | USD | 20250909 |