Secondly, the focusing degree of the beam also has an important influence on the marking effect. Focusing refers to the ability of the beam to converge to a point, affecting the concentration and distribution of energy. During the marking process, the high-focus beam is able to concentrate energy better, making the marking effect more obvious and greater depth. However, the low-focus beam is prone to scattering and divergence, resulting in fuzzy or uneven marking effect. Therefore, in order to obtain a better marking effect, it is necessary to choose a laser marking machine with a higher focus.