M3S portable handheld inkjet printer date coder is a stable high cost-performance product manufactured by meenjet, it is some like M3, but the print engine and main board and core board is updated, and the printer’s battery could be removed. The expiry date printing machine could print by hand or online, printing materials include board, carton, stone, pipe, cable, metal, plastic product, electronic, the fiber board, light steel keel, aluminum foil, etc.