with Pull Chain Control Dustproof Heavy Duty Wall-Mounted Exhaust Fan for School

with Pull Chain Control Dustproof Heavy Duty Wall-Mounted Exhaust Fan for School. Energy-Saving Motor: Features a permanent magnet synchronous motor with variable frequency speed regulation for low noise and high efficiency. Optimized Airflow Design: Unique airfoil blades create a 3D circulating breeze, enhancing comfort while avoiding direct high-speed airflow issues. Flexible Speed Control: Adjustable wind speed from 1m/s to 6.7m/s with frequency control mode for precise environmental adaptation. Wide Air Supply Distance: Maximum air supply distance up to 24m in open spaces, effectively covering large industrial areas. Customizable OEM/ODM: Supports full customization of products, packaging, and labels according to specific brand requirements. Certified Quality: Products are certified with ISO and CE standards, ensuring safety and compliance for international markets.