We extend some two Higgs doublet models. where the Yukawa couplings for the charged fermion mass generation only involve one Higgs doublet. by two singlet scalars respectively carrying a singly electric charge and a doubly electric charge. The doublet and singlet scalars together can mediate a two-loop diagram to generate a tiny Majorana mass matrix of the standard model neutrinos. https://crowssportes.shop/product-category/skates/