Do-it-yourself businesses and d.i.y. shops of common building materials
Retail trade in wooden building materials and garden materials, in specialised shops
Retail trade in lighting products in specialised shops
Manufacture of metallic frames or framings for building
Assembling of sheds, barns, silos, ... for agricultural use
Building of tunnels for roads and railways and other underpasses
Assembling of inside and outside metallic woordworks: doors, windows, frames for windows and doors, stairs, closets for equipped kitchens, shop equipments, etc.
Works of leakproofing of roofs and flat roofs
Assembling and disassembling of scaffoldings and work platforms
Production of synthetic materials meant for the building trade