When sourcing a marble laser cutter, the Laser Power (Wattage) is paramount; for stone engraving and light cutting, a CO2 laser with 100W to 150W is standard, while high-precision marking may require Fiber or UV lasers. You must verify the Cooling System, ensuring it uses an industrial-grade water chiller (e.g., CW-5200 or higher) to maintain laser tube longevity. Additionally, check the Drive System—leadshine stepper motors are common, but Japanese servo motors offer higher precision and speed for intricate marble designs.