| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 930.82 | USD | 20251120 |
| Beijing Yanshan Petro | China national standards | MT | 987.24 | USD | 20251120 |
| Shandong Langchem | China national standards | MT | 1114.17 | USD | 20251120 |
| Jinan Angxin Chem | China national standards | MT | 916.72 | USD | 20251120 |
| Shandong Langchem | China national standards | MT | 1107.12 | USD | 20251120 |
| Shandong Qiangsen Chem | China national standards | MT | 930.82 | USD | 20251120 |
| Shandong Qiangsen Chem | China national standards | MT | 930.82 | USD | 20251120 |
| Sinopec | China national standards | MT | 888.51 | USD | 20251120 |
| Lihuayi Weiyuan Chem | China national standards | MT | 994.29 | USD | 20251120 |
| Shandong Xima | China national standards | MT | 888.51 | USD | 20251120 |