| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chem | Reagent Grade | MT | 57.74 | USD | 20250909 |
| Shandong Qiangsen Chem | China national standards | MT | 102.81 | USD | 20250909 |
| Hunan Jianghai Env | China national standards | MT | 534.99 | USD | 20250908 |
| Shandong Qiangsen Chem | China national standards | MT | 102.77 | USD | 20250908 |
| Shandong Laya Chem | Reagent Grade | MT | 57.72 | USD | 20250908 |
| Hunan Jianghai Env | China national standards | MT | 123.89 | USD | 20250908 |
| Shandong Laya Chem | Reagent Grade | MT | 57.72 | USD | 20250908 |
| Shandong Laya Chem | Reagent Grade | MT | 57.69 | USD | 20250907 |
| Hunan Jianghai Env | China national standards | MT | 534.73 | USD | 20250905 |
| Hunan Jianghai Env | China national standards | MT | 534.73 | USD | 20250905 |