355 nm Ultraviolet Laser marking ,engraving and scoring on package film   In the printing of the surface content of the packaging box, traditional processing modes generally include ink printing, labeling, etc., but the content printed by these traditional methods is extremely easy to wear, fall, and tamper with, and even some printed materials can threaten human health. However, laser marking does not have these concerns. The laser has more advantages in the micro-processing of materials, and the cutting, marking, scribing, and punching effects are controllable.