Dear friend
We know your semiconductor machine type, it lets to engrave over metals , now we have development special inks that let engrave over metals too, using CO2 laser machine cheaperof low power 25 w , marking strong black color or marking a deep over metals .
Also we have several color to engrave over anodized aluminum, ceramic, glass and plastic .
You can see it on
http://articulo.mercadolibre.com.ar/...o-en-color-_JM
or on
http://us.my.alibaba.com/product/pro...tm?id=11747085.
Thanks very much .
LaserMax10