... resistant to be worn out.4,Double servo control ,high precision orientation,size more nicety.5,External film releasing mechanism:simpler and easier ... motor control,screw measruing,precision 1%2,Adjustment product weight without any tools.Technical specifications: TypeND-DXD-F400AND-DXD-F500AND-DXD ... )16501780*1350*1950mmDeadwight of machine540KG600KG900KG Stand Power bag packing machine up to 6000ml