Professional classification of industrial fans used for cooling and ventilation of manufacturing equipment and electronic devices. Handles axial fans, centrifugal fans, and sirocco fans used for thermal management inside electronic equipment such as control panels, servers, NC machine tools, automation equipment, and measuring instruments. Includes industrial-grade fans designed for harsh manufacturing environments, featuring DC12V/24V and AC100V/200V compatibility, dustproof/waterproof specifications, high-temperature resistance, low-noise types, and PWM control compatibility. Covers a wide range of sizes from 40mm to 200mm square, with detailed specifications including bearing type, rotation speed, airflow, and static pressure for precise selection.