... :34 hours continue work Dot Pin Pneumatic Marking Machines are detailed as follow:Application:specially for various ... graph,logo, Serial Number, effective date, batch number, frequency, manufacturers name, and other graphics and text marking. ... surface marker4, prints beautifulTechnical parameters Impact resistance0-52kgImpact frequency>130-300HZBar pressure bound0.2-0.7mpacontentNumbers or letters ...