The trade, import, export, repair and brokerage of security and air and water purification systems, telephone, electrical, low-current, thermal and refrigeration systems; the assumption of agencies, contracts and subcontracts; technical study and consulting related to room insulation, execution of all installation works for heating and cooling bodies; the opening of warehouses and shops; purchase, sale, repair of vehicles and machinery; purchase, sale, brokerage, administration of real estate and participation in other companies.