Recalling also the Strategy and Plan of Action to Strengthen Economic and Commercial Cooperation Among the Member States of the OIC , approved by the Tenth Session of the COMCEC and endorsed by the Seventh Islamic Summit Conference . Noting with appreciation the decision to establish , and to make operational , the Trade Preferential System among the OIC member countries ( TPS-OIC ) as of January 1st , 2009 , taken at the First Meeting of the Ministers of Commerce of the Member States of The Trade Negotiating Committee on November 24th , 2006 , in Istanbul .