... matrix: 5x55x77x912x1216x1624x2432x3248x4848Printing speed: Up to 1200 characters/second (5x7 single line)Operational Interface:Windows operation interface, colour touch screen, English, Chinese ... :0-30mm(adjustable)Bold: Up to 9 timesPrinting line:Pipe line,Electric wire and cable line,Food,Drinking ,Alcohol,Chemical,Auto, Pharmacy, Cosmetic,Building ...