| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 102.66 | USD | 20250827 |
| Hunan Jianghai Env | China national standards | MT | 534.4 | USD | 20250827 |
| Shandong Laya Chem | Reagent Grade | MT | 57.66 | USD | 20250827 |
| Shandong Qiangsen Chem | China national standards | MT | 102.55 | USD | 20250826 |
| Hunan Jianghai Env | China national standards | MT | 123.62 | USD | 20250826 |
| Hunan Jianghai Env | China national standards | MT | 533.8 | USD | 20250826 |
| Shandong Huize Chem | Reagent Grade | MT | 106.76 | USD | 20250826 |
| Shandong Laya Chem | Reagent Grade | MT | 57.59 | USD | 20250826 |
| Shandong Laya Chem | Reagent Grade | MT | 57.62 | USD | 20250825 |
| Hunan Jianghai Env | China national standards | MT | 123.66 | USD | 20250825 |