718 Research Institute works from 9 to 5, with weekends off. The 718th Research Institute of China Shipbuilding Industry Corporation was founded in 1966 and is located in Handan City, Hebei Province, covering an area of ??380,000 square meters. It is a professional environmental purification equipment research institute in my country. In more than 40 years of development and construction, it has developed a large number of air purification materials, equipment and testing instruments suitable for closed environments, and has obtained more than 200 scientific and technological achievements at the provincial and ministerial levels and more than 50 national patents and national defense patents. In particular, the room-temperature catalytic purification technology used in the Shenzhou spacecraft has reached the most advanced international level and has made outstanding contributions to my country's aerospace industry. In recent years, in response to the country's call for "converting military to civilian use", our institute has developed three series of civilian air purification products for home decoration, office use, and vehicle use using mature military technology. Due to its high purification efficiency and advanced industry technology, it has been praised by the country's best experts. Appraisal by leading domestic experts indicates that the products developed by us are technologically advanced and have high purification efficiency. The overall technology is at the most advanced level in the country, and the room-temperature catalytic technology has reached the most advanced level in the world.