1, motor wire coil 100% copper 2, Good price 3, low noise & price,big air flow Exhaust fan (industrial fan, cooling fan, ventilating fan) 1, Following sizes are available: 1380mm/1220mm/1060mm/900mm/800mm/680mm/580mm/480mm/380mm( 54"/ 48" /42" /35" /32'' /28'' /23'' /19'' / 15'')2. Power: 1.1KW /0.75KW /0.55KW /0.37KW /0.37KW /0.75KE/ 0.55KW /0.37KW /0.25KW(1.5HP/1.0HP/0.75HP/ 0.5HP/ 0.5HP/ 1.0HP ...