The letters H-E-P-A represent the words High Efficiency Particulate Air.HEPA filters capture almost all particles in the air that are zero point three microns in size or larger.

• HEPA四个英文字母代表HighEfficiencyParticulateAir.；高效微粒空气处理器能够捕捉到空气中几乎所有的微粒，即0