1,Casting steel,Blade:aluminum alloy 2,Large air volume,low noise,high-speed,light weight 3,With CE certificate Size:8" 10"12" 14"16" 18" 20" Colors:yellow ,red, blue, ect.Main material: shutter: 7pcs dia-cast aluminum alloy,fan body and cover:galvanized steel,handle: die-cast plastics,cable length:3m motor: aluminum alloy,with America,Japan,Europe,Taiwan styles' plug for choosing. can be ...