(2).Print height 2mm-12.7mm adjustable. (3).Machine writing or U disk import print content. (4).External optical controller. (5).Easy to disassemble the cartridge. (6).Built-in print synchronizer. (7).Can print QR code, production date, dot word, serial number, LOGO etc. (8).Available in English and Chinese mode. Can be selected by setting (9).System upgrade to make the touch screen more sensitive. (10).The screen is fixed more robustly. (11).The text input keyboard is enlarged, and it is more convenient to use keyboard input.