| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1257.88 | USD | 20251203 |
| Shandong Langchem | China national standards | MT | 1109.48 | USD | 20251203 |
| Nanjing Runsheng Petro | China national standards | MT | 989.34 | USD | 20251203 |
| Shandong Zhenkun | China national standards | MT | 1081.21 | USD | 20251203 |
| Shandong Langchem | China national standards | MT | 1081.21 | USD | 20251203 |
| Jinan Angxin Chem | China national standards | MT | 961.08 | USD | 20251203 |
| Shandong Zhiheng | China national standards | MT | 1257.88 | USD | 20251203 |
| Shandong Yihe Chem | China national standards | MT | 819.74 | USD | 20251203 |
| Shandong Jinshenrun Chem | China national standards | MT | 904.54 | USD | 20251203 |
| Qingdao Shengze Chem | China national standards | MT | 869.21 | USD | 20251203 |