  We show that there are six different choice of tensor product of
supersymmetric N=(1,1) spectral data in the context of supersymmetric quantum
theory and noncommutative geometry. We also show that the procedure of
extending a supersymmetric N=1 spectral data to N=(1,1) spectral data respects
only one tensor product among these. We refer this as the multiplicativity
property of the extension procedure. Therefore, if we demand that the extension
procedure is multiplicative then there is a unique choice of tensor product of
N=(1,1) spectral data.
