1. Department of Building Environment and Equipment Engineering, University of Science and Technology Beijing, Beijing 100083, China,
2. Department of Building Science, School of Architecture, Tsinghua University, Beijing 100084, China
3. Institute of Environment & Industrial Medicine, Hanyang University, Seoul 133-791, Korea
4. Digital Air Solutions Business Team, Samsung Electronics, Suwon 443-742, Korea
5. Department of Building Environment and Equipment Engineering, University of Science and Technology Beijing, Beijing 100083, China