43.22.Z - Plumbing, heat and air-conditioning installation
25.29.Z - Manufacture of other tanks, reservoirs and containers of metal
25.30.Z - Manufacture of weapons and ammunition
26.51.Z - Manufacture of instruments and appliances for measuring, testing and navigation
28.93.Z - Manufacture of machinery for food, beverage and tobacco processing
33.14.Z - Repair and maintenance of electrical equipment
33.20.Z - Installation of industrial machinery and equipment
42.21.Z - Construction of utility projects for fluids
62.01.Z - Computer programming activities
72.19.Z - Other research and experimental development on natural sciences and engineering