How to mark color by JPT MOPA 20W or 30W M6

If you mark color on 304 stainless steel that 175x175mm lens is better for mark color.

It test result by JPT laser source company.

Also the machine adjust the deviation of focusing about 2mm-5mm when you mark color.

Here is 20W 30W M6+ laser source parameters

Product model	YDFLP-20-M6+-S	YDFLP-30-M6+-S
M⊃2;	<1.3
Delivery cable length	2000mm
Nominal average output power	>20W	>30W
Maximum pulse energy	0.5J	0.5J
Full power repetition rate range	40-2000 kHz	60-2000 kHz
Pulse repetition rate range	1-2000 kHz
Pulse duration	1 - 250 ns	2- 250 ns
Longtime average power stability	<5%

What is parameter influence marking color ?

1)Laser power rate

2)Frequency

3)Pulse duration

4)Speed

5)Hatch the line method and parameter

6)Focusing

Here is a color metal plate

For example, the no.1 red color parameter

Speed 600 mm/s , power 40%, frequency 300 kHz, pulse duration 45 ns hatch line distance 0.002mm, focusing:deviation 3mm

So you can follow up above plate metal parameter if you use JPT MOPA M6+ laser source.