Meenjet handheld inkjet printer, or handheld thermal inkjet (TIJ) printer, is a machine commonly used to print manufacturing date and expiry date on products, such as plastic and glass bottles, clothes, metals, etc. The most classic and popular handheld inkjet printer gun of Meenjet is M6 (300dpi) and M7 (600dpi). They can print production and expiration dates, text, variable numbers, barcodes, QR codes, and images on almost any surface. Both of them could use the original HP45 fast-dry ink cartridge to print on most of the substrates. AL16 is a new model of large-character handheld inkjet printer with a 60mm printing height. It is suitable for printing on industrial building materials like cement, steel pipe, oil barrels, and stone pillars.