Abstract
Here we discuss and prove that the graphs attained by switching of any vertex with degree two which is adjacent to a vertex with degree two in triangular snake Tm, switching of any vertex with degree one in path Pm for m ? 3 and m odd, Switching of vertex with degree two in Pm except vertices u2 or um?1 with m > 4 and switching of any vertex in cycle Cm are an edge product cordial graphs.