初效过滤、高级顶棉过滤，地台玻璃丝棉过滤，活性碳过滤，三层活性碳。

Filtration system: Early effect filter, advanced cotton, glass cotton platform filter, activated carbon filter, activated carbon on three floors.

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检查MAU的初中效过滤器，当压差报警时对初效过滤器进行清洁或更换；

Check MAU filter, clean or replace it when DP alarms.

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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。

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

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