| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1115.41 | USD | 20251125 |
| Shandong Langchem | China national standards | MT | 1129.53 | USD | 20251125 |
| Shandong Langchem | China national standards | MT | 1115.41 | USD | 20251125 |
| Shandong Qiangsen Chem | China national standards | MT | 931.86 | USD | 20251125 |
| Shandong Langchem | China national standards | MT | 1108.35 | USD | 20251125 |
| Shandong Langchem | China national standards | MT | 1101.29 | USD | 20251125 |
| Qingdao Shengze Chem | China national standards | MT | 875.38 | USD | 20251125 |
| Qingdao Shengze Chem | China national standards | MT | 875.38 | USD | 20251125 |
| Beijing Yanshan Petro | China national standards | MT | 1171.89 | USD | 20251125 |
| Beijing Yanshan Petro | China national standards | MT | 1200.12 | USD | 20251125 |