| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun | China national standards | MT | 324.56 | USD | 20251111 |
| Shandong Zhenkun | China national standards | MT | 324.6 | USD | 20251110 |
| Shandong Zhenkun | Industrial Grade | MT | 430.45 | USD | 20251110 |
| Shandong Zhenkun | China national standards | MT | 987.92 | USD | 20251110 |
| Shandong Zhenkun | 90% | MT | 395.17 | USD | 20251110 |
| Shandong Zhenkun | 90% | MT | 395.17 | USD | 20251110 |
| Shandong Zhenkun | 90% | MT | 395.28 | USD | 20251107 |
| Shandong Zhenkun | 90% | MT | 395.28 | USD | 20251107 |
| Shandong Zhenkun | China national standards | MT | 988.2 | USD | 20251107 |
| Shandong Zhenkun | Industrial Grade | MT | 430.57 | USD | 20251107 |