| Vendor | Spec | Unit | Price | Currency | Date |
| Wanhua Yantai | China national standards | MT | 791.42 | USD | 20251201 |
| Shandong Xima | China national standards | MT | 791.42 | USD | 20251201 |
| Sinopec | China national standards | MT | 791.42 | USD | 20251201 |
| Shandong Jinwen Chem | China national standards | MT | 989.27 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 1059.94 | USD | 20251201 |
| Shandong Yihe Chem | China national standards | MT | 791.42 | USD | 20251201 |
| Wanhua Yantai | China national standards | MT | 890.35 | USD | 20251201 |
| Satellite Chem | China national standards | MT | 791.08 | USD | 20251130 |
| Wanhua Yantai | China national standards | MT | 791.08 | USD | 20251130 |
| Sinopec | China national standards | MT | 791.08 | USD | 20251130 |