| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chem | China national standards | MT | 831.91 | USD | 20250721 |
| Shandong Langchem | China national standards | MT | 964.74 | USD | 20250721 |
| Shandong Langchem | China national standards | MT | 1055.62 | USD | 20250721 |
| Sinopec | China national standards | MT | 1083.58 | USD | 20250721 |
| Sinopec | China national standards | MT | 1090.57 | USD | 20250721 |
| Sinopec | China national standards | MT | 1090.57 | USD | 20250721 |
| Qingdao Shengze Chem | China national standards | MT | 811.21 | USD | 20250719 |
| Qingdao Shengze Chem | China national standards | MT | 811.21 | USD | 20250718 |
| Shandong Mengkanda Chem | China national standards | MT | 853.17 | USD | 20250718 |
| Sinopec | China national standards | MT | 1083.95 | USD | 20250718 |