| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 875.4 | USD | 20251115 |
| Beijing Yanshan Petro | China national standards | MT | 875.4 | USD | 20251115 |
| Shandong Xima | China national standards | MT | 889.52 | USD | 20251115 |
| Shandong Qiangsen Chem | China national standards | MT | 931.87 | USD | 20251115 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1157.78 | USD | 20251115 |
| Shandong Langchem | China national standards | MT | 1115.43 | USD | 20251115 |
| Shandong Langchem | China national standards | MT | 1115.43 | USD | 20251115 |
| Shandong Qiangsen Chem | China national standards | MT | 931.87 | USD | 20251115 |
| Beijing Yanshan Petro | China national standards | MT | 988.35 | USD | 20251115 |
| Shandong Langchem | China national standards | MT | 1101.31 | USD | 20251115 |