1.It enable the sample in good and hard sealing,high speed,high efficiency. 2.Ultrasonic rolloff Use:Suitable for non-woven fabric material, It can make vest bag(t-shirt bag),flat bag,side inserting(folding)bag,bottom inserting(foldeing)bag,bag with handle and so on. 600 ModleBag TypeFlat bagRope bagT-shirt bagLength of bag( mm)100-800300-600300-800Width of bag( mm)300-550350-550150-360Speed of ...