| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun | 90% | MT | 395.08 | USD | 20251119 |
| Shandong Zhenkun | 90% | MT | 395.17 | USD | 20251118 |
| Shandong Zhenkun | 90% | MT | 395.17 | USD | 20251118 |
| Shandong Zhenkun | Industrial Grade | MT | 430.45 | USD | 20251118 |
| Shandong Zhenkun | China national standards | MT | 987.92 | USD | 20251118 |
| Shandong Zhenkun | China national standards | MT | 324.6 | USD | 20251118 |
| Shandong Zhenkun | 90% | MT | 395.39 | USD | 20251117 |
| Shandong Zhenkun | China national standards | MT | 988.48 | USD | 20251117 |
| Shandong Zhenkun | Industrial Grade | MT | 430.69 | USD | 20251117 |
| Shandong Zhenkun | China national standards | MT | 324.79 | USD | 20251117 |