Public service utility construction, installation, and maintenance services, namely, planning, laying out, constructing, and maintaining external networks in the nature of telecommunications network hardware and telecommunications network infrastructure, namely, telecommunications machines, apparatus and instruments utilized in the public service utility industries, namely, without limitation the electrical, gas, water, and sewer industries; Telecommunications industry infrastructure construction, installation, and maintenance services, namely, planning, laying out, constructing, installing, and maintaining external telecommunication systems hardware supporting global communications networks, electronic commerce, and related applications, and internal telecommunication systems hardware, namely, internal voice, video, data, and computer networking and systems hardware; Infrastructure construction, installation, and maintenance services in the field of traffic safety, namely, planning, laying out, constructing, installing, and maintaining traffic signals, road signs, guardrails, and smart highways, namely, driver information networking and systems hardware; Commercial construction and building renovation services, namely, planning, laying out, and custom construction and renovation of commercial structures; Telecommunications industry network hardware installation and maintenance services, and installation and maintenance services of related components for central offices, data storage centers, co-location facilities, web-hosting facilities and similar facilities, namely, planning, laying out and installing central office equipment

Engineering design and technical consulting related thereto in the public service utility industries, including without limitation the electrical, gas, water, and sewer industries; Engineering design and technical consulting related thereto in the telecommunications industry; engineering design and technical consulting related thereto in the public service sewer industries; Engineering design for use in connection with traffic safety systems and technical consulting related thereto; Public service utility construction, installation, and maintenance services, namely, maintaining external networking software utilized in the public service utility industries, namely, without limitation the electrical, gas, water, and sewer industries; Telecommunications industry infrastructure construction, installation, and maintenance services, namely, installing and maintaining and maintaining external telecommunication systems software supporting the global communications networks, electronic commerce, and related applications, and internal telecommunication systems software, namely, internal voice, video, data, and computer networking and systems software; Infrastructure construction, installation, and maintenance services in the field of traffic safety, namely, installing and maintaining driver information networking and systems software; Telecommunications industry networking software installation and maintenance services