The operation of a technical engineering and consulting firm, primarily in electricity, heating, ventilation, air conditioning, plumbing, lighting, synthesis, automation, supervision, regulation, instrumentation and industrial computing, in mechanics, building, piping, and in general any engineering office activity; the implementation and application on construction sites of the studies carried out; the commissioning of installations; assistance to the project owner; project management; monitoring and optimization of the energy performance of technical installations under contract: audit and consulting; calculation of Energy Reference Surface (SRE) and declaration of Heat Expenditure Index (IDC); maintenance and renovation of any production and distribution installation; management, coordination, monitoring of all construction sites; advice on regulations and standardization on technical lots; the purchase, sale and lease of all materials related to the aforementioned activities, project management, site management, construction economics, execution of technical studies and works and sale of building materials; BIM Modeling (Building Information Modeling, building data modeling).