Copper foil laser cutting by RFH high power 355 nm solid-state laser What is the high power 355 nm solid-state laser: https://www.rfhtech.com/expert-iii-355-high-power-uv-laser_c7
engraving copper foil by 355nm uv solid state lasers cold source How to engrave copper foil with uv laser : https://www.rfhtech.com/s9-y-series-integrated-3w-10w-uv-laser_p10.html