Detailed Product Description type LT868A-28 LT868A-32 LT868A-40 LT868A-52 LT868A-66 ... direction by steping motorroll system multistage combined type roll system.controled by DC electric machine, 4 grade to adjust.transmission mode frequency ... working and stop, Red: regular working and stopsafty cover whole machine covered by transparent plexiglass, saftey, low voice.computer control system ...