| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 830.33 | USD | 20250915 |
| Shandong Huize Chem | China national standards | MT | 837.37 | USD | 20250915 |
| Shandong Langchem | China national standards | MT | 971.07 | USD | 20250915 |
| Shandong Langchem | China national standards | MT | 1062.54 | USD | 20250915 |
| Sinopec | China national standards | MT | 1090.69 | USD | 20250915 |
| Sinopec | China national standards | MT | 1097.73 | USD | 20250915 |
| Sinopec | China national standards | MT | 1097.73 | USD | 20250915 |
| Qingdao Shengze Chem | China national standards | MT | 830.76 | USD | 20250914 |
| Qingdao Shengze Chem | China national standards | MT | 830.76 | USD | 20250913 |
| Qingdao Shengze Chem | China national standards | MT | 830.76 | USD | 20250912 |