  A signed graph product is defined for a new product, and initially the
unsigned graph product's Laplacian spectrum and signless Laplacian spectrum are
found. Next, for the signed graph product, the adjacency spectrum, Laplacian
spectrum, and signless Laplacian spectrum are found. In the end, we determined
the prerequisite for the signed graph product to be integral and we also have
generated a sequence of co-spectral signed graphs and a sequence of
non-co-spectral equienergetic signed graphs.
