... lower powder dissipation,higher precision and stable laser output.BDT50 laser marking machines with the resonant cavity works ... ,communication equipments,glasses and watch ,auto parts,plastic buttons,tools,tableware,medical equipment ,precision metal,gift accessories ... ,lable,PVC tube,etc.Technical Parameters Laser Power50WMin. Character0.3mmMin. Line Width0.015mmQ -Fequency1- ...