Parameter Setting of Laser Marking Black in Ezcad

Parameters for blackening on ABS engineering plastics?
Parameters for marking black and marking blue on stainless steel or iron?
Can you mark brown on aluminum or anodized aluminum (phone case)?
Mine is a 20W ordinary fiber optic machine.

Laser marking black on plastic, the speed is generally 1000, the power is about 30, the frequency is 20-30, and the line distance is 0.05.

The power of laser marking black on stainless steel is about 80, and the line distance is between 0.05-0.01.

Laser marking black on aluminum and anodized aluminum requires MOPA laser marking machine, not ordinary fiber laser.