... frame:channel steel ,casting iron frame5.tension control: manually ,automatic (importation ,domestic)6.one set of brake and clutch7.meter ... :air shaft ,steel shaft9.option function :ultrasonic sealing device ,edge selaing device1.max.unwinding width:1250mm 1800mm2.max.forming width ... .voltage:3 phase 380V AC/single phase 220v8.film edge folder. ZB-650/900II Full Automatic Film Edge Folder Machine