| Vendor | Spec | Unit | Price | Currency | Date |
| Wuhan Hengjiu Chem | China national standards | MT | 1060.33 | USD | 20251204 |
| Shandong Yeyang Chem | China national standards | MT | 777.57 | USD | 20251204 |
| Shandong Zhiheng | China national standards | MT | 947.22 | USD | 20251204 |
| Shandong Energy | China national standards | MT | 791.71 | USD | 20251204 |
| Shandong Hongyang Chem | China national standards | MT | 961.36 | USD | 20251204 |
| Luxi Chem | China national standards | MT | 1060.33 | USD | 20251204 |
| Lihuayi Shandong | China national standards | MT | 961.36 | USD | 20251204 |
| Zibo Lishuo Chem | China national standards | MT | 918.95 | USD | 20251204 |
| CNPC | China national standards | MT | 805.85 | USD | 20251204 |
| Shandong Qiangsen Chem | China national standards | MT | 819.99 | USD | 20251204 |