Unless otherwise exempted in accordance with section six, article five-a, chapter thirty-five of this code, all cemeteries, cemetery associations, cemetery companies and perpetual care cemetery companies, irrespective of how each may be defined in articles five, five-a and five-b, chapter thirty-five of this code, and companies that set and install memorial monument markers fall within the purview of the regulatory powers exercised by the Public Service Commission in accordance with this chapter.