| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 1013.19 | USD | 20250828 |
| Qingdao Shengze Chem | China national standards | MT | 1012.54 | USD | 20250827 |
| Shandong Xima | China national standards | MT | 984.42 | USD | 20250827 |
| Shandong Qiangsen Chem | China national standards | MT | 984.42 | USD | 20250827 |
| Shandong Laya Chem | China national standards | MT | 998.48 | USD | 20250827 |
| Shandong Langchem | China national standards | MT | 1096.92 | USD | 20250827 |
| Shandong Langchem | China national standards | MT | 1075.83 | USD | 20250827 |
| Shandong Langchem | China national standards | MT | 1096.92 | USD | 20250827 |
| Shandong Langchem | China national standards | MT | 1251.62 | USD | 20250827 |
| Shandong Langchem | China national standards | MT | 1279.74 | USD | 20250827 |