... 3.bottom gusset and degassing valv Aluminum Foil Coffee Bags With Vavle 1.Foil Coffee bag with zip 2.Food grade 3.Size,thickness ... artwork .zip top,tear strip3 layer with foilCan be with vavle or not Bag style:side gusset,stand up,qua sealed,ziplock bag etc .Appearance: ... mask,,skin care essence,essence oil,hair aging essence,incense,body lotion,underwear etc., Chemical and agriculture industries:seeds ...