| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chem | Reagent Grade | MT | 57.49 | USD | 20250818 |
| Hunan Jianghai Env | China national standards | MT | 532.79 | USD | 20250818 |
| Shandong Qiangsen Chem | China national standards | MT | 102.35 | USD | 20250818 |
| Hunan Jianghai Env | China national standards | MT | 123.38 | USD | 20250818 |
| Shandong Laya Chem | Reagent Grade | MT | 57.45 | USD | 20250816 |
| Shandong Laya Chem | Reagent Grade | MT | 57.45 | USD | 20250816 |
| Shandong Qiangsen Chem | China national standards | MT | 102.28 | USD | 20250816 |
| Shandong Laya Chem | Reagent Grade | MT | 57.45 | USD | 20250815 |
| Shandong Qiangsen Chem | China national standards | MT | 102.28 | USD | 20250815 |
| Shandong Qiangsen Chem | China national standards | MT | 102.33 | USD | 20250814 |