Sales of air purifiers and facemasks have rocketed and in some shops have simply run out.

BBC: China's coal conundrum as smog worsens

Despite big promises, few air purifiers can rid your home of irritants like pollen, dust, and smoke.

CNN: Your own clean-air act

It's currently trying to diversify beyond it's product mix of massage chairs and air purifiers into digital music players and accessories.

FORBES: Magazine Article

That inspired me to try other new products, like the first wireless telephones, the first telephone answering machines, the first air purifiers, and eventually this led to a full color catalog of new technology products, and later, 200 retail stores.

FORBES: Richard Thalheimer's Entrepreneurship Advice