41.20.Z - Building works related to erection of residential and non-residential buildings
35.30.Z - Steam and air conditioning supply
42.21.Z - Construction of utility projects for fluids
42.99.Z - Construction of other civil engineering projects n.e.c.
43.11.Z - Demolition
43.12.Z - Site preparation
43.21.Z - Electrical installation
43.22.Z - Plumbing, heat and air-conditioning installation
46.74.Z - Wholesale of hardware and plumbing and heating equipment and supplies
47.52.Z - Retail sale of hardware, building materials, paints and glass