The nasal cavity maintenance chain is a specialized institution that focuses on nasal health counselling services, nasal health care services, and the development of nasal health products. The nasal conservancy centre, which uses a unique snout plus tri-nasal cavity maintenance method, is the national family of professional chain-care institutions that provide care for the nasal cavity using systolic species, disease maintenance concepts and methods. As a result, the family of myriads is determined to make the country's top ranking for professional nasal cavity maintenance. The drug fumigation therapy in the family home is the first-ever holistic management method of the nasal cavity. For more than a hundred years, the family has benefited countless people in this area, and through continuous research, it has made it possible to make many improvements and make more sophisticated methods. The cascading products include nasal powder, salsa salsa salsa, salsa powder, salsa, salsa, sals...