1. Does not consume any consumables such as labels or ink. 2. Save manpower. 3. Visually fool-proof, prevent carving heavy code or wrong code. 4. High engraving quality (Grade B or higher) (ISO/IEC TR29158 (AIM DPM-1-2006) standard). 5. Supports TCP/IP, FTP, EtherCAT, and user-specified protocols, and links with user ERP/MES systems in real time. 6. The engraving depth is within the green layer of the PCB board.