| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1294.77 | USD | 20250930 |
| Sinopec | China national standards | MT | 1125.89 | USD | 20250930 |
| Lihuayi Shandong | China national standards | MT | 985.15 | USD | 20250930 |
| Sinopec | China national standards | MT | 985.15 | USD | 20250930 |
| Beijing Yanshan Petro | China national standards | MT | 1154.04 | USD | 20250930 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1322.92 | USD | 20250930 |
| Aite Zhejiang | China national standards | MT | 1308.85 | USD | 20250930 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1322.92 | USD | 20250930 |
| Aite Zhejiang | China national standards | MT | 1308.85 | USD | 20250930 |
| Aite Zhejiang | China national standards | MT | 1154.04 | USD | 20250930 |