| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1116.47 | USD | 20251201 |
| Qingdao Shengze Chem | China national standards | MT | 876.21 | USD | 20251201 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1158.86 | USD | 20251201 |
| Beijing Yanshan Petro | China national standards | MT | 908.72 | USD | 20251201 |
| Beijing Yanshan Petro | China national standards | MT | 1173.0 | USD | 20251201 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1158.86 | USD | 20251201 |
| Beijing Yanshan Petro | China national standards | MT | 1173.0 | USD | 20251201 |
| Beijing Yanshan Petro | China national standards | MT | 883.28 | USD | 20251201 |
| Shandong Mingyu | China national standards | MT | 1052.87 | USD | 20251201 |
| Shandong Junfeng | China national standards | MT | 1059.94 | USD | 20251201 |