Company Introdution Our company is managed fully according to ISO9001 International Quality System and has been committed to manufacturing and researching ventilation fan.All of products have passed UL,CUL,HVI and Energy Star certification. AIRZONE focuses on the innovation and creation of products,using mobile phone bluetooth technology,has invented the first ventilation fan that is with bluetooth speaker in the world and it has got UL,HVI,BQB,FCC and Energy Star certification and global ...