... control tension of film, tensions film for accurate positioning, electric automatic tracking and trademark accurate locationing. 6. Quick return on ... *Voltage: 220V Power:4000W Frequency:50 or 60HZ(alternative) FunctionCompletely automatic weighing, filling, film-pulling,bag-making, bag-punching(holing), printing ... etc. Note: WP-1040a08/ WP-1040b08, “a” is for plain plate weigher, “b” is for dimpled ...