when can make the firemen in the fire smoke.
In 1854, a man named John · TengHaoSi invention of predecessors on the basis of new progress again,
through several attempts, he learned to adding charcoal air filter can filter out harmful and toxic gases from the air.
During world war ii, the U.S. government began for radioactive material study, they need to develop a way to filter out
all harmful particles, to keep the air clean, enable scientists to breathe, so the HEPA filters arises at the historic moment.
In the 20th century, 50 s and 60 s HEPA filters was once very popular, is very popular with shelter design and construction personnel.
Into the 1980 s, the focus of air purification has turned to air purification, such as household air purifier.
Past filter in removing the stench in the air, toxic chemicals and poisonous gas is very good,
but cannot remove mould spore, the virus or bacteria, and the new family and office use air purifier,
not only can clean the toxic gases in the air, also can purify air, remove the bacteria, viruses in the air, dust,
pollen, mold spores, etc.
Anion air purifier has a variety of different ways of design and production, and every technical changes bring people
the improvement of the indoor air quality. But that's all there is only one objective: to purify indoor air to improve the quality of people's lives.
In 2014, the carbon filter technology used in air cleaner industry for the first time.
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