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What is a fresh air system
2020-12-07
In order to pursue a healthy and quiet life, a simple and practical system came into being 70 years ago in European countries. 90% of their buildings were insta
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What is an air curtain?
2020-12-07
Air curtain is driven by a high-speed motor through the flow or centrifugal wind wheel produced by the strong airflow, forming "invisible curtain".
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