Article XVII
Transparency
1. Each Party shall encourage entities to indicate the terms and conditions, including any deviations from competitive tendering procedures or access to challenge procedures, under which tenders will be entertained from suppliers situated in countries not Parties to this Agreement but which, with a view to creating transparency in their own contract awards, nevertheless:
(a) specify their contracts in accordance with Article VI (technical specifications);
(b) publish the procurement notices referred to in Article IX, including, in the version of the notice referred to in paragraph 8 of Article IX (summary of the notice of intended procurement) which is published in an official language of the WTO, an indication of the terms and conditions under which tenders shall be entertained from suppliers situated in countries Parties to this Agreement;
? Are willing to ensure that their procurement regulations shall not normally change during a procurement and, in the event that such change proves unavoidable, to ensure the availability of a satisfactory means of redress.
2. Governments not Parties to the Agreement which comply with the conditions specified in paragraphs 1(a) through 1?, shall be entitled if they so inform the Parties to participate in the Committee as observers.
Article XVIII
Information and Review as Regards Obligations of Entities
1. Entities shall publish a notice in the appropriate publication listed in Appendix II not later than 72 days after the award of each contract under Articles XIII through XV. These notices shall contain:
(a) the nature and quantity of products or services in the contract award;
(b) the name and address of the entity awarding the contract;
? The date of award;
(d) the name and address of winning tenderer;
(e) the value of the winning award or the highest and lowest offer taken into account in the award of the contract;
(f) where appropriate, means of identifying the notice issued under paragraph 1 of Article IX or justification according to Article XV for the use of such procedure; and
(g) the type of procedure used.
2. Each entity shall, on request from a supplier of a Party, promptly provide:
(a) an explanation of its procurement practices and procedures;
(b) pertinent information concerning the reasons why the supplier's application to qualify was rejected, why its existing qualification was brought to an end and why it was not selected; and
? To an unsuccessful tenderer, pertinent information concerning the reasons why its tender was not selected and on the characteristics and relative advantages of the tender selected as well as the name of the winning tenderer.
3. Entities shall promptly inform participating suppliers of decisions on contract awards and, upon request, in writing.
4. However, entities may decide that certain information on the contract award, contained in paragraphs 1 and 2?, be withheld where release of such information would impede law enforcement or otherwise be contrary to the public interest or would prejudice the legitimate commercial interest of particular enterprises, public or private, or might prejudice fair competition between suppliers.