Y.S.TECH launched EC centrifugal fan product line EC fans achieve high efficiency which means not only the primary energy will be utilized, but also heat loss will be reduced providing longer service life. Y.S.TECH proudly announces the EC fans, which include the backward and forward centrifugal fan from 108mm to 310mm wheel diameter, are in mass production. Customers in HVAC, industrial, automotive and telecom business will enjoy the extremely high quality and best services from Y.S.TECH.