This type are normal air filter applied to industrials and civi ventilation system
　　l/Low resistance, specialized chemical fiber filter material logical structure.
　　2/High universal structure and dimension, unified with international bag filter. Main purpose are for HVAC system and centralized ventilation system.
　　3/Average efficiency of atmosphere colorimetry: 45%, 65%, 85%, 95%o Efficiency grade: FS, F6, F7, F8o
　　Standard frame module:24', length of bag: 300mm, 400mm, 450mm, 600mmo