As the outer bore diameter is larger than the inner one, the filter cartridges have a good deep-level filtering capability.

滤芯过滤孔径外大内小，具有优良的深层过滤效果。

youdao

As the outer bore diameter is larger than the inner one, the filter cartridges have a good deep-level filtering capability.

滤芯过滤孔径外大内小，具有优良的深层过滤效果。

youdao