... punching and collect the punched cards.High sensitivity optical fiber sensor cooperating imported no-crevice built-in roller screw mandrel ... the cards are collected independently not to affect the punching speed, the machine can punch the cards quickly and reliably.( ... PETG, Paper, mixed plastic materials......Punching Sheet3*7, 3*8, 3*9, 4*8, 4*9, 5*5 or other formatVoltage Input380V 50/60HzPower3 ...