The regulations in this part, issued pursuant to section 105 of the Federal Alcohol Administration Act (27 U.S.C. 205), specify practices which may result in violations of section 105(c) of the Act and criteria for determining whether a practice is a violation of section 105(c) of the Act. This part does not attempt to enumerate all of the practices prohibited by section 105(c) of the Act. Nothing in this part shall operate to exempt any person from the requirements of any State law or regulation.