| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Chem | China national standards | MT | 854.83 | USD | 20250819 |
| Sinopec | China national standards | MT | 1093.06 | USD | 20250819 |
| Sinopec | China national standards | MT | 1093.06 | USD | 20250819 |
| Sinopec | China national standards | MT | 1086.06 | USD | 20250819 |
| Shandong Langchem | China national standards | MT | 1058.03 | USD | 20250819 |
| Shandong Langchem | China national standards | MT | 966.94 | USD | 20250819 |
| Qingdao Shengze Chem | China national standards | MT | 827.23 | USD | 20250818 |
| Shandong Mengkanda Chem | China national standards | MT | 841.26 | USD | 20250818 |
| Shandong Xingpeng Chem | China national standards | MT | 855.28 | USD | 20250818 |
| Shandong Langchem | China national standards | MT | 967.44 | USD | 20250818 |