The candidates for Class I methanol masers
  The collisional excitation of methanol molecule in non-dissociative
magnetohydrodynamic shock waves is considered. All essential chemical processes
that determine methanol abundance in the gas are taken into account in the
shock model. The large velocity gradient approximation is used in the
calculations of energy level populations of the molecule. We calculate the
optical depth for inverted methanol transitions, and present the list of
candidates for Class I methanol masers that have collisional pumping mechanism.
