(Based on Use in Commerce) Procurement, namely, purchasing goods in the nature of construction machines used for construction, repair and maintenance

(Based on 44(e)) Electrical repairs, maintenance, and installation of electrical wiring, outlets, light fixtures, electrical equipment in the nature of generators, and electrical panels; plant construction, maintenance and construction project management services for businesses in the energy production and transmission sector; installation, repair and maintenance of heating, plumbing, ventilating and air conditioning systems; repair or maintenance of nuclear power plants