The WING sanitary toilet seat is automatically controlled by the microcomputer inside,once press on the button,a new and clean plastic film will come out to replace the used one,it is clean.It is an intelligent and humanized product and creatively and totally solves the concern on public toilets. It is widely applicable to all public areas especially restaurants, hotels,casinos,beauty salons, offices, hospitals, shopping malls,airports, exhibition fairs, etc.