... DST, etc.Standard collocation1 set of 1100W top exhaust fan, 2 sets of 1100W bottom exhaust fansOptional ... of different types (CO2, YAG, and Fiber) laser cutting machine,laser engraving systems, laser marking systems, and laser welding machines. suitable for ... .Printing & packaging, corrugated paper carton industries.Laser welding for machinery, electronics, aviation, instrumentation system, battery, ...