Expert III 532 Grüner Laser 35W: https://www.rfhtech.com/expert-iii-532-green-laser-35w_p16.html 

Expert III 532 series green DPSS laser, developed and produced by RFH, covers 35w in laser power with short pulse width (<25ns@50K) ,superior beam quality (M²<1.2) and perfect laser spot quality (beam circularity >90%).It is perfect for glass marking,thin film etching and surface treatment for most of the metals and non-metal materials, such as removing the oxide layer from the metal surface