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Question:

Who knows what kind of filters MERV11 class air filters are? Do you sell them in China?

Who knows what kind of filters MERV11 class air filters are? Do you sell them in China?

Answer:

MERV11 is a United States air filter efficiency specifications,
Jul 4, 2017
refer to the 1.3.0 m particalesefficiency 65 < E2 < 80,3.10.0 m particalesefficiency 85 =
Jul 4, 2017
Shenzhen textile filter can according to the MERV11 index to design and manufacture.
Jul 4, 2017

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