The invention provides partially stabilised zirconia and alumina based electro-static dissipative or ESD ceramic compositions. In particular, this invention relates to a method for degrading rebaudioside A compositions to obtain rebaudioside A derivative products suitable for use as sweetener compositions. When the VIN storage electronic control unit rewrites the VIN upon receiving a request signal for rewriting the VIN, the standby RAM updates the rewriting history flag so as to switch into a set status indicating the rewriting is made. The identification opening opens downward and rearward with respect to the case.