| Vendor | Spec | Unit | Price | Currency | Date |
| CNPC | China national standards | MT | 635.15 | USD | 20251013 |
| Shandong Langchem | China national standards | MT | 626.7 | USD | 20251013 |
| Beijing Yanshan Petro | China national standards | MT | 633.74 | USD | 20251013 |
| Sinopec | China national standards | MT | 633.74 | USD | 20251013 |
| Sinopec | China national standards | MT | 612.62 | USD | 20251013 |
| Shandong Langchem | China national standards | MT | 506.99 | USD | 20251013 |
| Shandong Fusheng | China national standards | MT | 704.16 | USD | 20251013 |
| Shandong Fusheng | China national standards | MT | 704.16 | USD | 20251013 |
| Shandong Zhiheng | China national standards | MT | 633.74 | USD | 20251013 |
| Shandong Hongyang Chem | China national standards | MT | 668.95 | USD | 20251013 |