| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 393.78 | USD | 20250922 |
| Shandong Zhenkun | China national standards | MT | 393.78 | USD | 20250922 |
| Shandong Hualu | China national standards | MT | 421.91 | USD | 20250922 |
| Shandong Zhenkun | China national standards | MT | 393.78 | USD | 20250922 |
| Shandong Hualu | China national standards | MT | 421.91 | USD | 20250922 |
| Shandong Zhenkun | China national standards | MT | 421.91 | USD | 20250922 |
| Shandong Zhenkun | China national standards | MT | 421.91 | USD | 20250922 |
| Shandong Zhiheng | China national standards | MT | 365.65 | USD | 20250922 |
| Henan Longyu | China national standards | MT | 344.56 | USD | 20250922 |
| Shandong Hualu | China national standards | MT | 295.24 | USD | 20250921 |