Hello All friends,

Now, almost all green module is 520nm green laser diodes/modules, there are some issues need to clarify:

1).532nm green is outdated green modules, most of manufacturer stop to make 532nm instead of 520nm green modules.

2).532nm is not real green color, the color with a little yellow. 520nm is real pure green color.

3).532nm is not stable, easy to be broken, especially in very hot summer. But 520nm is very stable.

4).532nm is much brighter than 520nm green for same power.