| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 932.35 | USD | 20251129 |
| Lihuayi Weiyuan Chem | China national standards | MT | 875.84 | USD | 20251129 |
| Beijing Yanshan Petro | China national standards | MT | 918.22 | USD | 20251129 |
| Qingdao Shengze Chem | China national standards | MT | 875.84 | USD | 20251129 |
| Shandong Jiaen Chem | China national standards | MT | 953.54 | USD | 20251129 |
| Shandong Xingpeng Chem | China national standards | MT | 861.72 | USD | 20251129 |
| Shandong Xingpeng Chem | China national standards | MT | 882.91 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 1101.87 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 1108.93 | USD | 20251128 |
| Shandong Junfeng | China national standards | MT | 988.85 | USD | 20251128 |