Constant temperature and humidity engineering is used to limit and control the means of temperature, humidity, and cleanliness control precision range, the system of temperature and humidity in any space in the indoor or specific projects balanced package. It comes to decoration, insulation, precision air conditioning, fresh air ventilation, power supply, automatic control, environmental monitoring and a series of engineering. Keywords: temperature and humidity of Shenzhen, Guangzhou and humidity constant temperature and humidity engineering works Shenzhen Yong clean Engineering Co., Ltd. Contact: Mr. Yang Business Line: 13922861150 Tel: 0755-89725801 Fax: 0755-89725802 ext: 810 E - mail 2nd floor immortals Road newborn community, Longgang District No. 10 Science Park III neonatal Park 2:: yongjiejh@163.com URL: http://www.yjjh168.com/ address