| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1104.78 | USD | 20250930 |
| Shandong Langchem | China national standards | MT | 1125.89 | USD | 20250930 |
| Shandong Junfeng | China national standards | MT | 985.15 | USD | 20250930 |
| Shandong Junfeng | China national standards | MT | 1055.52 | USD | 20250930 |
| Shandong Junfeng | China national standards | MT | 914.78 | USD | 20250930 |
| Lihuayi Weiyuan Chem | China national standards | MT | 942.93 | USD | 20250930 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1154.04 | USD | 20250930 |
| Beijing Yanshan Petro | China national standards | MT | 1168.11 | USD | 20250930 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1154.04 | USD | 20250930 |
| Beijing Yanshan Petro | China national standards | MT | 1168.11 | USD | 20250930 |