| Vendor | Spec | Unit | Price | Currency | Date |
|---|---|---|---|---|---|
| CNPC | China national standards | MT | USD | 20251118 | |
| Shandong Zhiheng | China national standards | MT | USD | 20251118 | |
| Kunlun Daqing Petro | China national standards | MT | USD | 20251118 | |
| Shandong Hongyang Chem | China national standards | MT | USD | 20251118 | |
| Sinopec | China national standards | MT | USD | 20251118 | |
| Shandong Aite Chem | China national standards | MT | USD | 20251118 | |
| Shandong Laya Chem | China national standards | MT | USD | 20251118 | |
| Shandong Jinwen Chem | China national standards | MT | USD | 20251118 | |
| Shandong Langchem | China national standards | MT | USD | 20251118 | |
| Shandong Qiangsen Chem | China national standards | MT | USD | 20251118 |
