... package, cookie, cereral, snack, nuts , chips, soup,sauce,cheese,sugar,coffee,tea,chocolate,yogurt and beverage,soft drink bag, pet food ... valve .This degassing vlave is perfect to keep your roasted coffee bean fresh . 3) Structure of material can be all foil or ... gusseted pouch* Kraft paper bag with tin tie* Kraft paper coffee bag* Matt finish pouch with shiny clear window* Matt finish ...