... system multistage combined type roll system.controled by DC electric machine, 4 grade to adjust.transmission mode frequency control, synchronous ... and stop, Red: regular working and stopsafty cover whole machine covered by transparent plexiglass, saftey, low voice.computer control ... screens display, data input,showing in both English and Chinese power AC220V±8%50HZ 0.3KVA OR 110Vpacking size 2250 ...