Induction Fan: Also known as jet fan or relay fan. It transfers air through induction, with a low air volume by itself. Commonly used in public facilities for garage ventilation systems to mix and remove local air dead zones, improving the local air quality. Mainly designed to save space, the CHERRITOR induction fan is a new type of fan based on the high-speed jet induction ventilation concept. A ductless induction ventilation subsystem composed of multiple such fans can be integrated with supply and exhaust fans to form a complete ventilation and smoke exhaust system. Its working principle involves the directional high-speed airflow emitted from the nozzles of multiple induction fans properly arranged and designed within the system, which induces fresh or treated outdoor air, delivering it to the required area without the need for ducts, achieving optimal indoor air flow organization for efficient and cost-effective ventilation and air exchange.