The biggest cause of air pollution in Southeast Asia is that the exhaust emissions of motorcycles and cars exceed the environmental carrying capacity; the second is […]

Analysis of air supply method 1.1 First, we analyze from the principle of air. Polluted air generally has more particles, carbon dioxide, etc., which means that […]

A simple device that keeps heat in while moving stale air out.     Over a period of time, older homes began to sport new, tight […]

Everyone has the responsibility to fight the epidemic and Corona-virus. Staying at home, segregating, protecting themselves and their families is the best way, home is a […]

The main function of people installing the fresh air system is to ventilate, by the way, the coarse filtering of large particles such as pollen. For […]