| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1246.62 | USD | 20250901 |
| Shandong Langchem | China national standards | MT | 1170.64 | USD | 20250901 |
| Qingdao Shengze Chem | China national standards | MT | 971.42 | USD | 20250831 |
| Qingdao Shengze Chem | China national standards | MT | 971.42 | USD | 20250831 |
| Qingdao Shengze Chem | China national standards | MT | 971.42 | USD | 20250830 |
| Qingdao Shengze Chem | China national standards | MT | 971.42 | USD | 20250830 |
| Shandong Xima | China national standards | MT | 915.11 | USD | 20250830 |
| Qingdao Shengze Chem | China national standards | MT | 971.42 | USD | 20250829 |
| Qingdao Shengze Chem | China national standards | MT | 971.42 | USD | 20250829 |
| Qingdao Shengze Chem | China national standards | MT | 971.42 | USD | 20250829 |