Extremely low operating power consumption, effective cost reduction. Built-in air duct diversion system, reduce noise, increase fan service life and improve fan efficiency. Multi-wing centrifugal fan can provide high air volume and high static pressure conditions; Ensure use in different environments. It is suitable for assembling ultra-clean production lines, which can be configured to be used by one or more sets according to the requirements of the process, or can be connected in series to form a 100-level assembly line.