... 1.adopt igbt 2. energy saving 3. work continuously for 24 hours usage:hardening ,brazing weld,forging,annealing and melting High frequency ... solution or melt the principle so that the two together. For example: computer copper and aluminum radiator, horn net value ... saving3, secure, reliable, non-million-volt high-pressure, very safe for the operator.4, the frequency bandwidth to meet the different ...