| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 1013.81 | USD | 20250914 |
| Shandong Xingpeng Chem | China national standards | MT | 1041.97 | USD | 20250914 |
| Shandong Xingpeng Chem | China national standards | MT | 1041.97 | USD | 20250913 |
| Qingdao Shengze Chem | China national standards | MT | 1013.81 | USD | 20250913 |
| Shandong Xima | China national standards | MT | 957.49 | USD | 20250913 |
| Shandong Qiangsen Chem | China national standards | MT | 985.65 | USD | 20250913 |
| Shandong Langchem | China national standards | MT | 1171.52 | USD | 20250912 |
| Shandong Langchem | China national standards | MT | 1196.86 | USD | 20250912 |
| Shandong Langchem | China national standards | MT | 1175.74 | USD | 20250912 |
| Shandong Langchem | China national standards | MT | 1210.94 | USD | 20250912 |