The present invention relates to a kit for whitening teeth and a kit for fabricating a dental apparatus andor denture without visiting the dentist or stomataologist. The manufacturing method for a semiconductor device includes the steps of forming a penetration hole 50 in a semiconductor chip 10 having an electrode 14, and forming a conductive layer 70 in the region including the inside of the penetration hole 50. The content of the broadband signals are then encoded using space time coding, and the STC encoded broadband content is transmitted from the plurality of antennas via a first wireless network protocol.