1. The business is mainly focused in the United States, with core products including residential and commercial True HEPA air purifiers, filters, accessories, and related aromatherapy systems. 2. It is a well-known brand in Health / Medical (air purification equipment), with competitors including Dyson, Blueair, and Coway. 3. The official website brand terms are "Alen" or "Alen Air Purifiers".