| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yuhuang Chem | China national standards | MT | 1370.85 | USD | 20251201 |
| Beijing Yanshan Petro | China national standards | MT | 1158.86 | USD | 20251201 |
| Shandong Hanyue Chem | China national standards | MT | 932.74 | USD | 20251201 |
| Shandong Yuhuang Chem | China national standards | MT | 1293.12 | USD | 20251201 |
| Jinan Jiaxing Chem | China national standards | MT | 1158.86 | USD | 20251201 |
| Lihuayi Shandong | China national standards | MT | 989.27 | USD | 20251201 |
| Sinopec | China national standards | MT | 932.74 | USD | 20251201 |
| Shandong Xima | China national standards | MT | 975.14 | USD | 20251201 |
| Lihuayi Shandong | China national standards | MT | 890.35 | USD | 20251201 |
| Lihuayi Shandong | China national standards | MT | 890.35 | USD | 20251201 |