With the growth for over 20 years, DunAn Environment, the core industries in DunAn Group which is China top 500, has became public company (Stock title: DunAn Environment, Stock Code: 002011) and professional manufacturer of refrigeration autocontrol components, electric refrigeration central air conditioners (including commercial, particular type, and military applications), in addition to terminal equipment, utilization of renewable energy sources, fans, heat exchangers, refrigeration & freezing equipments, pressure vessels and so on.

DunAn Environment is the market leader in refrigeration components industry, the largest manufacturer of service valve in the world and the first company in China which supplies nuclear grade air-conditioners to nuclear power plants using its own intellectual property.

Currently DunAn Environment has 4 major businesss which operate in the form of division: Refrigeration Components, Environment Optimization and System Integration, Thermal and Cold Chain, New Energy Resource.

DunAn has won the following honors in succession:  "Far-famed Trademark in China", "Famous Brand Product in China", "the most Competitive Brand in China", " National Pilot Innovative Enterprise", listed in "the Best Public SMEs " by Forbes Asia, " the 4^th Top 50 for Value of China Public SMEs"," 2009 Taurus TOP 100 for China Public Company".