... valve ,made from PET/Alu/PE,certificated by QS Item:coffee plastic bags with valveFeatures:1))Material : PET/Alu/PE,2 ... )We can supply various kinds of coffee bags such as 100g,150g,200g,250g,500g,1000g,2000g,3000g bags and bags roll ... film.2)We are professional coffee bags manufacturer which has ...