Building construction services; Building maintenance and repair; Construction, maintenance and renovation of property; Installation, maintenance and repair of air conditioning apparatus, apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilation, distribution of water, electric apparatus for cooling air, air heaters, heat accumulators for machines, installation of systems for the supply or production of energy, namely, electricity, gas, heating and water; safety installation of safety protection systems of any kind for installation in buildings; Heating equipment installation and repair; Installation, repair and maintenance of heating equipment; Maintenance and repair of heating installations; Maintenance and repair of telecommunications networks, apparatus, and instruments; Maintenance and/or repair of air conditioning apparatus; Installation, repair and maintenance of condensing apparatus, steam condensers, radiators for motors and engines, air reheaters, boiler tubes; Repair or maintenance of vessels; Repair or maintenance of water purifying apparatus; Environmental remediation services, namely, waste disposal

Remote monitoring services of heating, ventilating and air conditioning apparatus; Providing technical information updates of industrial process control computer software via the global computer network; Technical monitoring services for conditions of water; Consulting services in the field of environmental assessment, compliance and planning; Engineering services for building and property condition assessment, facility management, repair and restoration, building instrumentation and monitoring, and environmental consulting; Environmental services, namely, detection of contaminants in water; Environmental services, namely, technical consultation in the field of environmental science, engineering services, design for others in the field of environmental engineering, designing and testing of new environmentally friendly products for others; Planning, development and technical support of electronic communications networks; Industrial research in the field of waste, recycling waste, treatment of materials, energy; Metering and monitoring electric power consumption by third parties for electric power providers; Testing or research on electricity; Electricity and natural gas services, namely, meter data management and analysis; Water meter reading and data analysis; Water quality control services; Preparing environmental compliance reports; Technology consultation in the field of installations that operate using energy of any kind and the safety thereof, air conditioning, lighting, data processing, ergonomics, computers, peripheral equipment for computers and computer programs, installations that operate by means of energy of any kind, processing waste, recycling waste, treatment of materials; Testing or research on civil engineering; Engineering