| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1142.7 | USD | 20251104 |
| Shandong Jinwen Chem | China national standards | MT | 987.51 | USD | 20251104 |
| Shandong Mingyu | China national standards | MT | 888.76 | USD | 20251104 |
| Zibo Lishuo Chem | China national standards | MT | 846.44 | USD | 20251104 |
| Zibo Lishuo Chem | China national standards | MT | 846.44 | USD | 20251104 |
| Zibo Lishuo Chem | China national standards | MT | 846.44 | USD | 20251104 |
| Wanhua Yantai | China national standards | MT | 888.76 | USD | 20251104 |
| Wanhua Yantai | China national standards | MT | 818.23 | USD | 20251104 |
| Wanhua Yantai | China national standards | MT | 832.33 | USD | 20251104 |
| Wanhua Yantai | China national standards | MT | 790.01 | USD | 20251104 |