Carrying out furnace inspections; Repairs to entire heating systems; Maintenance, replacement and optimization of the burner; Rectification of faults within 24 hours; Replacement and adjustment of heating controls; Installation of oil lines; Offering a 24-hour emergency service; Providing maintenance and service contracts; Trading in goods of all kinds; Participations; Acquisition, management and sale of real estate and securities; Acquisition, management and exploitation of intellectual property rights.