... ,500g,1kg,2kg coffee bag with valve made from PET/AL/PE,certificated by QS Item: coffee bag with valveFeatures:1 ... ))Material : PET/AL/PE, 2)Thickness:90-160micron 3)Syle: stand up coffee bag 4 ... ,250g,500g,1000g,2000g,3000g bags and bags roll film. 2)We are professional coffee bags manufacturer which has done business ...