Hall Xinfeng is a brand of Shenzhen Hi-Tech Jin Xin Purification Technology Co., Ltd., which was established in 2005. It is a high-tech enterprise integrating research and development, production, sales and service of fresh air purification products. It owns a number of wholly-owned subsidiaries such as Shenzhen Hall, Hubei Hall and Beijing Hall. At the same time, Hall Xinfeng has been rated as one of the top ten brands in the fresh air industry for many years, and has participated in the formulation of national standards and industry standards such as Air Purification Device for Ventilation System and Air Quality Standard for Primary and Secondary Schools, and has been invested by the Shenzhen Municipal Government. There are nearly 100 researchers, and the company has more than 70 patents. Products have passed the national 3C, EU CE, Korea KC certification, and exported to nearly 100 countries and regions around the world, and have been unanimously recognized by customers around the world.