  We consider an extension of the standard model based on the group
$\mathrm{U}(2) \times \mathrm{U}(3)$, which is naturally compatible with the
standard model interacting-particle representations and the spontaneous
symmetry breaking of $\mathrm{U}(2) \times \mathrm{U}(3)$ to an electrostrong
$\mathrm{U}(3)$. In its minimal version, the model only adds one extra
$\mathrm{U}(1)$ gauge boson and it implies that the hypercharge is distributed
between the factors of the hyperweak and hyperstrong forces. We show that the
anomaly cancellation condition can be solved by adding exotic fermions
associated with a $16$-dimensional representation of $\mathrm{U}(2) \times
\mathrm{U}(3)$. A brief discussion of the mechanism of the spontaneous
breakdown of $\mathrm{U}(2) \times \mathrm{U}(3)$ in the gauge boson sector is
given.
