The difference between Vickers hardness 279.2 and 279.9

The difference between VIX 279.2 and 279.9 lies in the different styles and configurations. The first is the version, a 300N and a 360N, which look the same in appearance, but there is not much difference between cattle and rice, so it is difficult to distinguish them. Secondly, their styles and configurations are different. On the whole, WE420 is stronger and 279 households can accept it.