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子母架绿白棉初效空气过滤器At the beginning of mother wearing green white cotton air filter水洗棉初效空气过滤器主要用于过
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初效纸框过滤器(Plank and Foldaway Filter)1、特点：重量轻，通用性好，过滤面积大；初阻力低；容尘量高；容尘量，经济适用。2
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