1, is that you can not use gas protection, which will make the surface of the welding for some materials may be yellow or black.
2, affecting the aesthetics of the product.
3, double red light vibration mirror is mainly used in medical equipment, electronic intelligent equipment, instrumentation and other industries such as microfluidics, hemodialysis, gas pumps, intelligent thermostatic valves, hard disk, micro-TV, sensors and other related products welding.