33.12.Z - Repair and maintenance of machinery
25.51.Z - Coating of metals
25.53.Z - Machining of metals
33.20.Z - Installation of industrial machinery and equipment
42.22.Z - Construction of utility projects for electricity and telecommunications
42.99.Z - Construction of other civil engineering projects n.e.c.
43.21.Z - Electrical installation
43.24.Z - Other construction installation
43.34.Z - Painting and glazing
43.35.Z - Other building completion and finishing
43.50.Z - Specialised construction activities in civil engineering
43.99.Z - Other specialised construction activities n.e.c.
81.22.B - Other building and industrial facility cleaning not classified elsewhere