(1) the use of vacuum tube, the output power, stable and reliable performance 
 (2) high sensitivity spark over-current protection circuit. Can effectively cut off due to high current output is too large mold damage, more effective control of spark 
 3 with the high-frequency frequency stabilizer and high frequency shielding to minimize high frequency interference 
 Equipped with overcurrent protection system, to increase the useful lives of the vacuum tube 
 5 according to processing needs, pneumatic pressure, reduce the intensity of work, improve the quality of voltage products 
 6. Installation of high-precision temperature control to ensure welding consistency