去年北京空气超标的时候，我掏出信用卡，准备把8千块给IQ Air公司。不过，这个价格让我怀疑。净化器是必须那么 […]
标签：对比
Finally! Directly comparable tests: DIY versus Blue Air
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Are Particle Counters and Government Machines the Same?
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More Comparisons
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DIY Compared to Expensive Filters
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DIY HEPA Filter over Time
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