Eletro youth factory,Our factory are famous brand in audio and video all over the world.our email is we supply the Professional audio and video:Speaker,Power Amplifier,Mixers,Elecronic frequency divider,Effictors,Preamplifier,Signal  divider,Over drive,Exciter,Equaize,and so on.Especially, ok series and Y-series are the most important in all over the world. We are the greater producer in specialized speaker,from raw material development, loudspeaker unit design and production, sound speaker design and production.