| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 1010.0 | USD | 20250821 |
| Shandong Xingpeng Chem | China national standards | MT | 1038.06 | USD | 20250821 |
| Shandong Junfeng | China national standards | MT | 1192.36 | USD | 20250821 |
| Shandong Xima | China national standards | MT | 953.89 | USD | 20250821 |
| Shandong Qiangsen Chem | China national standards | MT | 981.95 | USD | 20250821 |
| Shandong Langchem | China national standards | MT | 1167.11 | USD | 20250821 |
| Shandong Langchem | China national standards | MT | 1192.36 | USD | 20250821 |
| Shandong Langchem | China national standards | MT | 1171.32 | USD | 20250821 |
| Shandong Langchem | China national standards | MT | 1206.39 | USD | 20250821 |
| Shandong Langchem | China national standards | MT | 1206.39 | USD | 20250821 |