| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chem | China national standards | MT | 791.26 | USD | 20251209 |
| Jinan Aochen Chem | China national standards | MT | 918.43 | USD | 20251209 |
| Sinopec | China national standards | MT | 777.13 | USD | 20251209 |
| Shandong Zhiheng | China national standards | MT | 805.39 | USD | 20251209 |
| Sinopec | China national standards | MT | 777.13 | USD | 20251209 |
| Hubei 789 Chem | China national standards | MT | 819.52 | USD | 20251209 |
| Wanhua Yantai | China national standards | MT | 777.13 | USD | 20251209 |
| Wanhua Yantai | China national standards | MT | 890.17 | USD | 20251209 |
| Shandong Yeyang Chem | China national standards | MT | 819.52 | USD | 20251209 |
| Shandong Jinwen Chem | China national standards | MT | 989.08 | USD | 20251209 |