Ningbo Oushi Intelligent Technology (宁波欧世智能科技有限公司) is the Chinese company of the ADEXSI group, which was founded in Luynes, France, and supplies systems for daily ventilation, smoke exhaust and daylighting. It makes roof and facade smoke vents, pneumatic and electric window actuators, and fire-rated control units. Its systems are installed at Beijing Daxing International Airport, Zhengzhou Xinzheng Airport and the Shenzhen World Exhibition Centre. Its fire electric window openers and their control equipment hold fire product certifications 5982023ZY010006 and 5982023ZY010005 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.