▌Events
▶August 18, 2009. China International Indoor Heating System, Heat Pump & Ventilation Equipment Expo
▶May 10, 2009. Grand opening of “Yunsor Carbon Crystal Experience Center” in Beijing
▶April 1, 2009. Acknowledgement of Hi-tech Transformation
▶March 17, 2009. International China Build Expo
▶February 10, 2009. Cooperation with Sohu.com
▶February 26, 2009. Introducing Software Calculation System
