... packing tea,coffee,etc 2.Perfect air permeability 3.Suitable for machine: IMA,MAISA,etc 4.SGS&FDA Tea filter bag is ... , tasteless, good ventilation 6, Used for packing tea as tea bag, sanitarian tea, Chinese herbal medicine, condiment, desiccant and so on ... 2.0sHeatseal ability 120 oC to 160 oC tea filter bag