On 25th November, 2015, Suzhou industrial park management committee and the university of Sydney officially signed a cooperation agreement in Beijing to jointly establish the university of Sydney's first overseas entity. The China center is the first overseas entity of the university of Sydney, which fully reflects the importance of the university of Sydney's China strategy and its vision of cooperation with the park. Based on the design of the air conditioning system, Airpool air-return grille commercial purifier is adopted. The purifier is in the air conditioning operation or ventilation state, and the air circulation is carried out through the air circulation of the air conditioning and independent operation, so as to realize the indoor air purification and ensure the indoor air quality meets the design requirements.