"those" (L.11) refers to "public companies" (L.11).
All public companies, including those (public companies) with private participation
Todas as companhias públicas, incluindo aquelas (companhias públicas) com participação privada
All public companies, including those (public companies) with private participation
Todas as companhias públicas, incluindo aquelas (companhias públicas) com participação privada