Art. 5 Prior to the establishment of specific energy consumption indicators, or energy efficiency, dealt with in this Law, entities representing manufacturers and importers of energy consuming machines and appliances must be heard in a public hearing, with advance disclosure of proposals., designers and builders of buildings, consumers, teaching and research institutions and other interested entities. Art. 3 Manufacturers and importers of energy-consuming machines and appliances are obliged to adopt the necessary measures to ensure compliance with the maximum levels of energy consumption and minimum levels of energy efficiency, contained in the specific regulations established for each type of machine and appliance. Brasilia, October 17, 2001; 180th of Independence and 113th of the Republic.