GUANGDONG NEDFON AIR SYSTEM CO., LTD is established in 1989 and specializing in developing, manufacturing and selling different ventilation products. With 31 years experience and development in the ventilation industry, we are at the cutting edge of the following ventilation prodcuts: Air Curtain, Household Exhaust Fan, Industrial Ventilating Fan, Duct Fan, Energy Recovery Ventilator, External Rotor Motor and other Firefighting Ventilators. We Strictly implemented ISO9001:2000 quality control standard from 2002 and we have the advanced machines in the process of manufacturing and testing to ensure the best quality product to our customers. Most of our products are approved by cETLus, HVI, ENERGY STAR, KC, SASO, CB, CE, RoHS and CCC, which is the main reason that we are winning more and more customers all over the world. We will continuously devote ourselves to the research & developing new ventilation products and offer better service to our customers in the future.