| Vendor | Spec | Unit | Price | Currency | Date |
| Sinopec | China national standards | MT | 1090.57 | USD | 20250905 |
| Shandong Langchem | China national standards | MT | 1062.42 | USD | 20250905 |
| Shandong Langchem | China national standards | MT | 970.96 | USD | 20250905 |
| Qingdao Shengze Chem | China national standards | MT | 830.38 | USD | 20250904 |
| Qingdao Shengze Chem | China national standards | MT | 830.38 | USD | 20250904 |
| Shandong Xingpeng Chem | China national standards | MT | 844.45 | USD | 20250904 |
| Shandong Mengkanda Chem | China national standards | MT | 802.23 | USD | 20250904 |
| Shandong Langchem | China national standards | MT | 971.12 | USD | 20250904 |
| Sinopec | China national standards | MT | 1090.75 | USD | 20250904 |
| Sinopec | China national standards | MT | 1097.79 | USD | 20250904 |