EDM Die Sinking Machine
A. There is automatical A. R. C carbon surveillant device to prevent destroying workingpiece. 
B. Steady circuit of big area electrode. 
C. High and low clearance individual circuit. 
D. PWM servo system, standard DC servo motor. 
E. Synchronous discharge system of high voltage superposited. 
F. Square wave and equal energy output. 
G. Circuits of super-fine process. 
H. Capacity of mirror process (negative pole