Description: Air purification services; Janitorial services; cleaning of commercial and industrial premises; cleaning of exterior building surfaces; carpet cleaning; air duct cleaning; window cleaning; maintenance and repair of buildings; plumbing services; carpentry contractor services; electrical contractor services; and painting contractor services; mechanical services, namely, maintenance for heating, cooling, electrical and plumbing equipment; Business planning and business continuity consulting in the field of disaster recovery; Security guard services for corporate offices, critical infrastructure, corporate and school campuses, healthcare facilities, and community and nonprofit facilities; emergency response alarm monitoring services, namely, monitoring of alert devices for the dispatch of emergency medical response and public security services and notification to third parties; Air purification systems comprised of an air quality sensor, generator, and air purification apparatus; Design of heating, cooling, electrical and plumbing equipment; calibration services for heating, cooling, electrical and plumbing equipment; Air quality monitoring services
