| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng | China national standards | MT | 1210.45 | USD | 20251010 |
| Jinan Xinhou | N330 | MT | 253.35 | USD | 20251010 |
| Jinan Xinhou | N220 | MT | 1351.2 | USD | 20251010 |
| Jinan Jinquanjin | China national standards | MT | 1900.12 | USD | 20251010 |
| Jinan Jinquanjin | 600 mesh | MT | 239.27 | USD | 20251010 |
| Jinan Xinhou | N660 | MT | 1210.45 | USD | 20251010 |
| Jinan Jinquanjin | N220 | MT | 253.35 | USD | 20251010 |
| Shanxi Hengxin Chem | N220 | MT | 1210.45 | USD | 20251010 |
| Jinan Xinhou | N220 | MT | 1350.17 | USD | 20251009 |
| Jinan Jinquanjin | 600 mesh | MT | 239.09 | USD | 20251009 |