42 Providing information and demonstrations, exhibitions, and seminars on-- energy using equipment manufactured and sold by others, including natural gas-fired commercial cooking equipment, heating, ventilating and air conditioning equipment and systems, steam systems environmental and air quality compliance, green or environmental building construction technologies, including residential construction, energy use and conservation, energy efficient lighting, alternative energy sources, textile industry energy use; recycling of construction and demolition waste, indoor air quality; windows, coatings and skylights, insulation, and water conservation
Trademark: 76434644
