The core activity of TREG Sàrl is the provision of services in the field of wood processing, particularly in the areas of: renovation (renovation and refurbishment of buildings), bespoke joinery (custom-made furniture and interior design), window installation and manufacturing, carpentry (roof truss and wood construction), surface sanding and treatment, and CNC cutting (computer-controlled wood processing and cutting). The company also offers additional services such as the installation of PVC and aluminum windows, the manufacture of custom-made furniture, and the execution of insulation work.