... bag 4,Non-toxic, BPA free,SGS 1KG block bottom aluminum foil coffee bags Aluminum foil coffee bag ... Specification Details for Aluminum foil coffee bag: SizecustomizedShape:block bottomMaterialPET/AL/PEThickness:80-130 micronsPrintinggravure printingPacking:export standard ... moisture barrier3) Oxygen permeability barrier, can keep a long time fresh4) Low Water Vapour Transmission Rate5) Matt Finish ...