... what size the film is,big or small,it can achieve the best effect of cooling,Double-cutting and Double-rolling:It ... is specially suitable for producing laminating film and printing film. Name:SJ-40DX2-500 Color Belt Film Blowing Machine Set Introduce:Performance and CharacteristicsIt is ... what size the film is,big or small,it can achieve the best effect of cooling,Double-cutting and Double-rolling:It ...