| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 977.31 | USD | 20251216 |
| Shandong Chambroad | China national standards | MT | 729.44 | USD | 20251216 |
| Sinopec | China national standards | MT | 1097.7 | USD | 20251216 |
| Qilu Petrochem | China national standards | MT | 729.44 | USD | 20251216 |
| Shandong Yihe Chem | China national standards | MT | 800.26 | USD | 20251216 |
| Shandong Dongming Petro | China national standards | MT | 934.82 | USD | 20251216 |
| Qingdao Shengze Chem | China national standards | MT | 736.52 | USD | 20251216 |
| Shandong Langchem | China national standards | MT | 1069.37 | USD | 20251216 |
| Shandong Jinwen Chem | China national standards | MT | 934.82 | USD | 20251216 |
| Shandong Mingyu | China national standards | MT | 878.16 | USD | 20251216 |