Air Filter Paper Feature: 1. materials: wood pulp, special fiber and rubber 2. applications: make all sorts of filt Air Filter Paper Types1. Air Filter PaperHTK1127,HTK2123 ... ,HTG3155,HTG2135,HTG1180,HTG21755. Flame Retardant Filter PaperHTZ3180,HTZ74066. Fuel Filter Paper HTQ1180(crepe paper)7. Oil-Air Filter Paper HTJK2127 Special products or products with special ...