As we known, normal stainless steel we mostly used in our lives is 304, but the hardness and softness of the stainless steel 304 is not suitable for making manicure tools.

• 当我们被知道,我们大概在我们的生命中用的正常不锈钢是 304 ，但是坚硬和不锈钢 304 的柔和对成功的因素是不适当的修指甲术工具之时。