| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chem | Reagent Grade | MT | 106.91 | USD | 20250902 |
| Hunan Jianghai Env | China national standards | MT | 123.79 | USD | 20250902 |
| Hunan Jianghai Env | China national standards | MT | 534.67 | USD | 20250901 |
| Hunan Jianghai Env | China national standards | MT | 534.67 | USD | 20250901 |
| Hunan Jianghai Env | China national standards | MT | 123.82 | USD | 20250901 |
| Shandong Qiangsen Chem | China national standards | MT | 102.71 | USD | 20250901 |
| Shandong Laya Chem | Reagent Grade | MT | 57.69 | USD | 20250901 |
| Shandong Qiangsen Chem | China national standards | MT | 102.77 | USD | 20250830 |
| Shandong Laya Chem | Reagent Grade | MT | 57.72 | USD | 20250830 |
| Shandong Qiangsen Chem | China national standards | MT | 102.77 | USD | 20250829 |