| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Xinhou | N660 | MT | 1210.33 | USD | 20250930 |
| Jinan Jinquanjin | China national standards | MT | 1899.94 | USD | 20250930 |
| Shanxi Hengxin Chem | N220 | MT | 1210.33 | USD | 20250930 |
| Hebei Shibei Rubber | N220 | MT | 1055.52 | USD | 20250930 |
| Dongguan Canyu Chem | N220 | MT | 1055.52 | USD | 20250930 |
| Shanxi Hengxin Chem | N220 | MT | 1013.3 | USD | 20250930 |
| Jinan Xinhou | N660 | MT | 1209.75 | USD | 20250929 |
| Jinan Xinhou | N220 | MT | 1350.42 | USD | 20250929 |
| Jinan Jinquanjin | China national standards | MT | 1899.03 | USD | 20250929 |
| Jinan Jinquanjin | 600 mesh | MT | 239.14 | USD | 20250929 |