用途：粗尘过滤，空调通风系统保护性预过滤。
Purpose:Filtering dust and prefiltration in the air conditioning program.
试验证明，该粗滤器具有过滤效率高，进气阻力低，粗滤自动排尘，结构简单，安装方便，成本低的优点。
The test results show the filter has advantages of high filtering efficiency, low intake resistance, automatic dusting, simple structure, convenient installation and low costing.
亦可与超细熔喷纤维、粗效过滤棉复合，达到更高滤尘、除臭功效。
It can also be compounded with superfine melt-blown fiber, coarse filter cotton to reach a better dust filtering and deodorant effect.
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