20W Fibre laser using Raycus laser source, on of the top reliable and quality laser source, lifespan on average 100,000 hours. Fibre is suitable for metal and plastic marking. It is able to do engraving. 
Our lasers can be customized based on your needs, from laser source, to scanners, to lens and other options like focal distance pointer.
We have Raycus, maxphotonics and IPG laser source for selections.
Usually recommended laser source for reliability we use IPG (German made) or Raycus. They are both reliable and stable as compare to maxphotonics.
 
Materials that can be mark in general:
 
Metals:Stainless steel, aluminum, gold, silver, titanium, bronze, platinum or copper
Plastics:ABS, polycarbonate, polyamide, PMMA or plastics with laser additives
Other materials:Foils and films, Laminates, Paints