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Last year, the COVID-19 wreaked havoc around the globe. There was a COVID-19 case in Hong Kong in which the virus was transmitted from one floor of the building to the next through old, outdated public pipeline systems. Various public pipelines were installed, which served as exhaust pipelines for the bathroom and other purposes, which is why the pipeline designs were a cause for concern. For this reason, significant research and development has been conducted in creating a product which satisfies specific requirements.
Generally speaking, ventilation fans are connected to light switches, which means that once it’s turned off, the power of the fan is also disconnected. This means that the counterflow panel of the ventilation fans is switched on and off by the wind pressure and the structure cannot be airtight. The 708V electronic non-return valve design adopts special mechanical structure that can immediately close the valve in a silent manner. The ventilation fan in its shut down state can also have a robust secure valve that can block 100% of the smoke, funny smell, strong wind, and even diseases that are infiltrated through the pipelines. This can guarantee the health and life quality of all family members.
