| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkanda Chem | China national standards | MT | 839.23 | USD | 20250731 |
| Sinopec | China national standards | MT | 1084.01 | USD | 20250731 |
| Shandong Langchem | China national standards | MT | 1056.03 | USD | 20250731 |
| Shandong Langchem | China national standards | MT | 965.12 | USD | 20250731 |
| Sinopec | China national standards | MT | 1091.0 | USD | 20250731 |
| Sinopec | China national standards | MT | 1091.0 | USD | 20250731 |
| Qingdao Shengze Chem | China national standards | MT | 811.86 | USD | 20250730 |
| Shandong Mengkanda Chem | China national standards | MT | 839.85 | USD | 20250730 |
| Shandong Langchem | China national standards | MT | 965.83 | USD | 20250730 |
| Shandong Langchem | China national standards | MT | 1056.82 | USD | 20250730 |