... Anti-corrosion Low noise Industrial Ventilation Fan for workshop,factory,mine,Tunnel Ventilation FanAxial Ventilation Fan 1. Huge airflow, ... to ensure antirust performance. Company Profile: Foshan Chosen Ventilation Technology Co.,Ltd -- your trustworthy supplier, constant ... partner and sincere friend. CHOSEN VENTILATION is a professional supplier of ventilation equipments in Foshan, China, which ...