| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 741.81 | USD | 20251209 |
| Qingdao Shengze Chem | China national standards | MT | 741.81 | USD | 20251209 |
| CNPC | China national standards | MT | 805.39 | USD | 20251209 |
| Shandong Zhiheng | China national standards | MT | 946.69 | USD | 20251209 |
| Shandong Yushuo Chem | China national standards | MT | 819.52 | USD | 20251209 |
| Zibo Lishuo Chem | China national standards | MT | 918.43 | USD | 20251209 |
| Lihuayi Shandong | China national standards | MT | 819.52 | USD | 20251209 |
| Lihuayi Shandong | China national standards | MT | 847.78 | USD | 20251209 |
| Qingdao Shengze Chem | China national standards | MT | 741.81 | USD | 20251209 |
| Wuhan Hengjiu Chem | China national standards | MT | 1059.73 | USD | 20251209 |