If you are in the market looking for a laser machine. I would recommend a 50 to 100 watt CO2 laser. Our products are a perfect solution to mark on a variety of different substrates with CO2 or Fiber laser/Yag laser. Our general recommendation is 25-30 watts minimum for a CO2 laser and 10 watt minimum for a Fiber Laser. CO2 lasers will give a wide range to cover a variety of substrates unless you have specific need for fiber laser.