37 Buildings maintenance and repair; Contractor services, namely, review, maintenance and repair of building, plumbing, electrical and mechanical systems for others; Buildings, plumbing, electrical and mechanical systems assessment services for the purpose of identifying and mitigating risks to the these systems; Installation, maintenance and repair of electric appliances, elevators, fire alarms, burglar alarms, irrigation systems, business and office machinery and equipment, computer hardware, heating, ventilating and air conditioning apparatus and systems, building insulation, doors and windows, blinds, computer systems hardware, kitchen appliances, security systems, telephone lines, flooring, protective coatings for floors, roofing, lighting apparatus; Installation, changing, replacement and repair of locks; Plumbing and gas and water installation, maintenance and repair; Providing technical support, namely, technical advice concerning the installation, repair and maintenance of electric or electronic apparatus and equipment; machinery maintenance and repair; furnace and burners maintenance and repair; installation, maintenance, repair of security systems; audio visual equipment and apparatus maintenance and repair; boiler cleaning, maintenance and repair; Construction, refurbishment and maintenance project management services in the field of mechanical and electrical engineering; Construction, refurbishment, maintenance and fit-out project management services in the field of building fabric, moves and changes; construction project management; installation, maintenance and repair of CCTV systems, generators, and uninterrupted power supply systems; installation, maintenance and repair of systems for controlling access to premises; installation, maintenance and repair of systems for monitoring premises; provision of information and advice in relation to the maintenance and replacement of office machines and apparatus, building instrumentation and machinery, fire and burglar alarm systems, fire protections systems and heating, ventilating and air conditioning apparatus and systems; maintenance of electrical, communications and engineering facilities; maintenance of business critical systems in relation to disaster recovery, namely, backup generators, alarm systems, fire protection systems, temperature and humidity control systems and heating and cooling control systems; cleaning of buildings; janitorial services; pump repair; repair information concerning building, plumbing, electrical and mechanical systems; provision of infrastructure fabric and grounds maintenance services, namely, maintenance of real estate property; asphalting; bricklaying; building insulating, namely, installation of insulating materials; building sealing; real estate property maintenance and repair; masonry; painting, interior and exterior; plastering; plumbing; building restoration; upholstery repair; window cleaning; chimney sweeping; damp proofing of buildings; construction supervision; rental of construction equipment; construction information; demolition of buildings; office machines and equipment installation, maintenance and repair; assistance and consultancy relating to business equipment repair and maintenance; assistance and consultancy relating to business premises building repair and maintenance; information, advisory, supervisory, consultancy and helpdesk services, namely, 24/7 emergency response contractor services, namely, relating to repair of buildings and the fabric of buildings, plumbing, electrical and mechanical systems for others, relating to the aforesaid services