1. Name, address, telegraphic address and telephone, telex and fax numbers of the contracting authority.

2. Name, address, telephone number, telegraphic address, telex and telecopier number of the contracting entity.

3. Name, address, telegraphic address, electronic address, telephone number, telex and fax number of the contracting entity.

4. Name, address, telegraphic address, , electronic address, telephone number, telex and fax number of the contracting entity.