Founded in 1987, the company is known for air quality in the country. It is the first known “private high-tech enterprises” and a good new technology enterprise in the sino-kwan village science and technology park. In september 2006, yadu successfully completed overseas financing and became a joint venture company with foreign and medium-sized companies, the beijing home environment technology company ltd., with a total of 700 million assets and more than 2,000 employees, has developed into better enterprises in the indoor environment industry. Austro has excellent quality support for its products, not only with is0900 certification but also with german os. Eu ce and others. The “adu” brand is a well-known brand in beijing, and the “adu union” and “adu cleaner” are beijing brand products. After more than a decade of development, ait has produced, sold and sold four main categories of products, such as our priority “wetifiers”, which are now in millions of stations, with internationally advanced quality and visual design. The domestic market share of primary hit products exceeds 80 per cent。