| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1057.5 | USD | 20250804 |
| Shandong Langchem | China national standards | MT | 966.45 | USD | 20250804 |
| Sinopec | China national standards | MT | 1092.51 | USD | 20250804 |
| Sinopec | China national standards | MT | 1092.51 | USD | 20250804 |
| Qingdao Shengze Chem | China national standards | MT | 825.22 | USD | 20250801 |
| Shandong Langchem | China national standards | MT | 965.09 | USD | 20250801 |
| Shandong Langchem | China national standards | MT | 1056.0 | USD | 20250801 |
| Sinopec | China national standards | MT | 1083.98 | USD | 20250801 |
| Shandong Mengkanda Chem | China national standards | MT | 839.21 | USD | 20250801 |
| Aite Zhejiang | China national standards | MT | 1007.05 | USD | 20250801 |