... energy saving up to 30% compared with SCR technology induction machine 5. Diode rectification technology make sure high power factor – ... 2.Small size and portable , compared with SCR controlled machine, only 1/10 working space is needed, greatly reduce occupation space;3 ... ware, art ware, standard part, fastener, fabricated mechanical part, bronze lock, rivet, steel pin and pin.2. Hot fitting refers to ...