G Level - General filter : System pre-filter,Can remove 1?m and larger particles and oil/water vapor, Water removal efficiency at over 95%, Residual oil: [email protected],21?
H Level - High Efficiency Oil Removal Filter : Usually installed after G level filter, Can remove 0.01?m and larger particles and oil/water vapor, Residual oil: [email protected],21?C. D Level - Dust Protection Filter Can remove dust 0.01?m and larger