| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiancheng | China national standards | MT | 393.87 | USD | 20250902 |
| Shandong Qiancheng | China national standards | MT | 393.97 | USD | 20250901 |
| Shandong Qiancheng | Industrial Grade | MT | 506.53 | USD | 20250901 |
| Shandong Qiancheng | China national standards | MT | 1041.2 | USD | 20250901 |
| Shandong Qiancheng | 90% | MT | 393.97 | USD | 20250901 |
| Shandong Qiancheng | 90% | MT | 394.2 | USD | 20250831 |
| Shandong Qiancheng | China national standards | MT | 1041.81 | USD | 20250831 |
| Shandong Qiancheng | Industrial Grade | MT | 506.83 | USD | 20250831 |
| Shandong Qiancheng | China national standards | MT | 394.2 | USD | 20250831 |
| Shandong Qiancheng | China national standards | MT | 394.2 | USD | 20250829 |