| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 790.34 | USD | 20251028 |
| Shandong Langchem | China national standards | MT | 1143.16 | USD | 20251028 |
| Zibo Lishuo Chem | China national standards | MT | 846.79 | USD | 20251028 |
| Zibo Lishuo Chem | China national standards | MT | 846.79 | USD | 20251028 |
| Qingdao Shengze Chem | China national standards | MT | 1044.37 | USD | 20251028 |
| Shandong Mingyu | China national standards | MT | 875.01 | USD | 20251028 |
| Shandong Mingyu | China national standards | MT | 889.13 | USD | 20251028 |
| Shandong Xima | China national standards | MT | 790.34 | USD | 20251028 |
| Zibo Lishuo Chem | China national standards | MT | 846.49 | USD | 20251027 |
| Sinopec | China national standards | MT | 839.44 | USD | 20251027 |