... bag-broken 5.OEM service PE High speed film blowing machine high quality 7-layer co-extruded pe film(alibaba China ... .5) puncture resistance,transparency7)keep food longer time fresh8)high seal strength, good heat-sealing performance, excellent smoothness and low bag ... bag production kind including:three side seal bag,ziplock bag,stand pouch,T-seal bag,M-seal bag,hook bag,drawstring bag,die ...