... .0Water Permeability Times≤1.0≤1.5≤2.0≤2.5Brightness%≥75.0Dry Tensile StrengthMDKN/m≥0. ... 5gsm,18gsm,21gsm and 23gsm,20gsm2.Size: 5*6.25cm,6*7.25cm,6*8cm,7*7cm,9.5x6 ... .6.Usage: pack tea, herbs, cigarette etc.7.Packing: 250pcs in a polybag, then packed in ... .Payment term: T/T, 30% in advance and balance before shipment11.Certificate: US FDA issued by ... account no. heat-seal filter paper for tea and coffee