| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Jinrihe Chem | China national standards | MT | 1002.47 | 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 Junfeng | China national standards | MT | 917.76 | USD | 20251115 |
| Shandong Xima | China national standards | MT | 889.52 | USD | 20251115 |
| Lihuayi Weiyuan Chem | China national standards | MT | 995.41 | USD | 20251115 |
| Beijing Yanshan Petro | China national standards | MT | 917.76 | USD | 20251115 |
| Shandong Jiaen Chem | China national standards | MT | 1094.25 | USD | 20251115 |
| Shandong Zhiheng | China national standards | MT | 907.87 | USD | 20251114 |
| Shandong Hongyang Chem | China national standards | MT | 907.87 | USD | 20251114 |