Folded with different metal mesh network after the turn of order again and again made a strong airflow in the dust and heavy, not compressive deformation, and still maintain its high efficiency. Its biggest impact is through the air filter, change direction several times, and reached a low rate of resistance to the effect of a high level of integration.

[feature]: * Either aluminum or stainless steel is chosen as filter material. * Multi-layered structure, increased filtration area * Export of metal-back network support * washable repeatedly, reduced operating costs