Beijing Huayan Changshouwu Technology Co., Ltd. relies on the negative ion therapy instrument and other products independently developed and produced by its parent company (Shenyang Huayan Electronics Co., Ltd.) to promote the "Longevity House" health care project nationwide, which has been widely recognized and welcomed. At present, it has cooperated with about 400 health care service centers in most provinces of the country. Huayan’s original atomized negative ion therapy device belongs to the national second-class medical device, suitable for auxiliary treatment of respiratory and nervous system diseases, chronic disease rehabilitation, sub-health conditioning, health care, and was selected as a health care by the "China Aging Health Promotion Project" The key application products of maintenance services. Huayan advocates the concept of "breathing improves health and health changes China" and contributes to the construction of a "healthy China".