Providing information relating to advertisements, to the sale of goods, to shops classified by the type of business, and to sales volume tracking; providing business information; providing commercial information; advertising for others; management of exhibitions promoting new products of others; rental of exhibition sites for advertising purposes; telephone answering services; market research via a computer data base; business management and consultation; planning of sales promotion and advertising

Installation, repair and maintenance of submarine cables and aerial power transmission wire; repair and maintenance of communication equipment for control in buildings, telecommunication systems, telecommunications facilities, data communication facilities, computer systems; building construction; construction of communication plants; installation and repair of telephone sets and telephone wire; leasing and rental of civil engineering machinery, earth moving equipment and excavators; providing information relating to construction; consultation and supervision in the field of construction and civil engineering works; inspection and maintenance of electrical facilities installed in buildings, and of building facilities; disinfecting telephone sets