EL light,EL product,EL Wrist-watch,EL sheet,EL wrist Band,EL gift,EL,EL panel ... WHAT IS EL?EL Operating Theory:EL is an equipment that converts electronic ... book-type computer, handy play boy, telephone, electronic note book, electronic dictionary, control panel of music equipment, micro- ... them. EL light,EL product,EL Wrist-watch,EL sheet,EL wrist Band,EL gift,EL,EL panel