Installation and maintenance of commercial and residential electronic security systems; installation and maintenance of fire protection systems; and installation and maintenance for electrical communication systems; Construction and maintenance of airports, highways, and light railroads; construction of environmental facilities; construction and maintenance services, namely integrated building of electrical systems, structured and IT infrastructure services for electrical, structured cabling, security access control, telephony, LAN/WAN networks and audio/visual systems; telecommunication installation, maintenance and support services in the marine field

Data transmission and reception services via telecommunication means

Public and private utility services in the nature of water supply, distribution and management services

Environmental remediation services, namely water treatment services

Engineering consulting services; environmental consulting services in the nature of investigations, feasibility studies, facilities planning, and final design; design of packaging and wrapping materials, namely, shrink bundling film, bags, and sheeting; design of airports, highways, and light railroads

Repair and maintenance of medical and healthcare products, namely medical supplies and devices, monitoring equipment, and medical instruments and apparatuses

Security services, namely monitoring security systems for the protection of property and individuals