China Dongguan Xinlong Non Woven Machinery Equipment Co., Ltd. latest company news about Air Filter Classification Standard

Home > News> Air Filter Classification Standard

Air Filter Classification Standard

May 8, 2024

latest company news about Air Filter Classification Standard 0

1. European Standard Filter (Filtration Efficiency Color)
F5 40% ~60% White
F6 60%~80% Green
F7 80%~90% pink
F8 90%~95% light yellow
F9 95%~99% white

2. National standard filter (filtration efficiency, color)
F5 40%~60% light yellow
F6 60%~80% orange
F7 80%~90% purple
F8 90%~95% dark yellow
F9 95%~99% white