Development

★2010

30th Anniversary Celebration

★2009

Shandong famous trademark

★2008

National high-tech enterprise

★2005

United States Corporation Yantair Filters Inc.(U.S.A.)

★2005

The Ministry of Science and Technology "Torch Plan" key high-tech enterprises

★2005

ISO14001 international certification

★2004

Xi'an Baoyuan Purification Co., Ltd. was established.

★2003

ISO9001 international certification

★2003

Shenzhen Baoyuan Purification Co., Ltd. Established

★2000

Renamed "Yantai Baoyuan Purification Co., Ltd"

★1995

Implement the reform of shareholding system

★1989

Renamed "Yantai City Purification Equipment Factory"

★1984

Renamed "Yantai Global Dust Filter Material Factory"

★1980

Yantai metal products factory created