... service WZDJ-B600 Non Woven bag Fabric Bag Making Machine of Full AutomaticUse:This machine continual improved by our company, ... according to same industry technical norms of the most advanced in the world at present,recast and ... side-correction control.7. This machine adopt ultrasonic welding of all aspects,bag mouth folding welding,bottom sealing,side sealing,once full completed,fast ...