| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yuhuang Chem | China national standards | MT | 1290.82 | USD | 20251104 |
| Zibo Lishuo Chem | China national standards | MT | 987.51 | USD | 20251104 |
| Sinopec | China national standards | MT | 874.66 | USD | 20251104 |
| Zibo Lishuo Chem | China national standards | MT | 987.51 | USD | 20251104 |
| Sinopec | China national standards | MT | 1213.54 | USD | 20251103 |
| Sinopec | China national standards | MT | 1248.82 | USD | 20251103 |
| Lihuayi Shandong | China national standards | MT | 1246.0 | USD | 20251103 |
| Shandong Zhiheng | China national standards | MT | 1171.21 | USD | 20251103 |
| Sinopec | China national standards | MT | 881.93 | USD | 20251103 |
| Sinopec | China national standards | MT | 874.88 | USD | 20251103 |