Avg.efficienvy

Color

Arrestance 

Using 

30-35%

white

92%

Pre-filter for the middle efficiency filter

40-45%

orange

96%

Commercial building, theater .station, airport

60-65%

green

97%

Automobile painting room, school, computer room

80-85%

pink

98%

Petrochemical industry, plastics industry , 

pharmaceutical factory,

food products factory, paintting factory, electrical factory, 

hospitial, laboratory dust-free room

90-95%

yellow

99%

Precise electronics industry, national defense factory, 

sterile room