A Brazil customer who purchased induction motor machinery want to buy laser cutting machine in China.
The laser cutting machine he needs will cut metal mainly, the air source could be either N2 or O2, with N2 the cutting result can be shining and the appearance is good while O2 may have some black line at edge of the cutting.
Some buyer also consider the cost difference of O2 and N2 when purchasing the laser cutting machine.
The industry webiste http://www.industrial-lasers.com/
Pearl
Emily