Sweden 5w uv laser engraver manufacturer buy RFH 355nm uv laser source to mark black on white plastic The RFH UV laser enables faster stick marking, saving the cost of buying another machine. At present, most of the stick marking methods used in the market are traditional ink marking methods, while UV laser engraving belongs to non-contact marking, which can quickly mark the surface of sticks and accurately control the accuracy of the surface , so that it is controlled within 0.02mm, and it is processed sharply.