Filter efficiency:99.99% and if need, can use two times high efficiency filters.

除尘效率：99.99%，特殊要求，针对特殊要求可采用二次高效过滤除尘器；

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Company's main products are the early effect filter, in effect filter, high efficiency filters and activated carbon air filter.

公司主要产品有初效过滤器、中效过滤器、高效过滤器，以及活性碳空气过滤器。

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But studies have shown that high-efficiency particulate air (HEPA) filters on most jets today can capture 99.97% of bacterial and virus-carrying particles.

但研究表明，如今大部分飞机上的高效微粒空气过滤器能够滤掉99.97%的细菌和病毒微粒。

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The recirculated air usually passes through high-efficiency particulate (HEPA) filters before delivery into the cabin.

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High Efficiency Particulate Air (HEPA) filters, which usually last a year.

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Plastic mattress covers help keep dander out of beds, and room air cleaners equipped with high efficiency particulate air (HEPA) filters can remove dander from the air.

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