| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Aochen Chem | China national standards | MT | 1241.53 | USD | 20251031 |
| Shandong Yaoming Chem | China national standards | MT | 832.39 | USD | 20251031 |
| Shandong Yaoming Chem | China national standards | MT | 832.39 | USD | 20251031 |
| Wanhua Yantai | China national standards | MT | 931.15 | USD | 20251031 |
| Wanhua Yantai | China national standards | MT | 818.28 | USD | 20251031 |
| Wanhua Yantai | China national standards | MT | 895.88 | USD | 20251031 |
| Shandong Langchem | China national standards | MT | 1142.78 | USD | 20251031 |
| Zibo Lishuo Chem | China national standards | MT | 846.5 | USD | 20251031 |
| Shandong Kaitai Petro | China national standards | MT | 917.04 | USD | 20251031 |
| Shandong Kaitai Petro | China national standards | MT | 888.83 | USD | 20251031 |