... is a multilayer coextrusion material. It can be used for frozen beef,mutton,pork,tuna fish and others. This shrink bag ... is a multilayer coextrusion material. It can be used for frozen beef,mutton,pork,tuna fish and others.With good oxygen ... coextrusion inflation processing with the double-bubble technics.Applied to frozen beef, mutton and pork packing with bone-in or boneless ...