6. NOTICE Any notice and demand in relation with this agreement shall be given or made by telefax, telex, mail, cable or otherwise in writing, sent or delivered to the addressee at its address or telefax / telex number as set forth in the preamble of this agreement or to such other address or tlelfax / telex number as it may from time to time designate in writing to the other party. Each communication as aforesaid shall be deemed to have been effectively given :