... paper 1. Used for packing tea, coffee, chinese medicine,etc. 2. SGS, COC etc. ... heat seal 4. food grade tea bag filter paperOur factory specially produce food grade tea bag & coffee filter paper which ... tensile strength and nice heat seal performance, suitable for packing tea, coffee, herbs, condiment and other powder/granules products! ... E. certified machines 16.5-30g heat sealing tea bag filter paper