The execution in Switzerland and abroad, on its own account or for third parties, directly or indirectly, of the following activities: construction, maintenance, repair and installation of electrical, mechanical, metalworking, industrial, commercial and civil plants, as well as a workshop for the production of metal, plastic or other materials, electrical plants and switchboards. Installation, repair and maintenance of: heating, air conditioning, conditioning and refrigeration systems of any kind or type, including the evacuation of combustion products and condensates and ventilation and aeration of rooms; water and sanitary systems of any kind or type; gas distribution and utilization systems of any type, including the evacuation of combustion products, ventilation and aeration of rooms, lifting systems for people or goods using elevators, hoists, escalators and similar systems, fire protection systems. Rental of machinery for industry and construction. Trade in materials and machinery for industry and construction. Transfer in any form, including exchange, of movable and immovable goods of any type. Purchase, sale, exchange, development, rental and management of real estate in general, including rural properties and agricultural land. Building and reconstruction activities of any type, urbanization, subdivision and development of land, both on its own account and through contracts with third parties. Rental of lifting equipment and vehicles with or without operators, road haulage of goods on behalf of third parties. Purchase, sale and rental of companies and business branches. Acquisition or granting of agencies, commissions, representations, with and without deposit, and mandates, purchase, use and transfer of patents, know-how, copyrights and other intellectual property rights; promotional activities, public relations and data processing; granting and obtaining exploitation licenses, commercial as well as carrying out all commercial, financial, movable and immovable operations necessary or useful for achieving and implementing the company's purpose.