We are the the professional manufacturer of sanitary toilet seat for many  years , WING sanitary toilet seat ,it 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 and safe. The toilet seat is mainly for public toilet , can be installed in all kinds of public places ,like airport , hotel , office building , leisure clubs , hopitals , restaurant and so on .