11.2 Members, upon request, advise other members, particularly members of the developing country, and provide technical assistance on agreed terms for the creation of national standards bodies and participation in international standards bodies, and encourage their national standards bodies to do the same. Members ensure that the technical rules of local authorities are notified at the level directly below that of the central government of members, in accordance with paragraphs 9.2 and 10.1 of Article 2, specifying that notification of technical rules whose technical content is essentially in accordance with the technical provisions of the central authorities of the previously notified member concerned, is not necessary. Where technical requirements are required and relevant international standards exist or are in the process of being completed, members use them or their relevant parties as the basis of their technical regulations, unless these relevant international standards or parties are an ineffective or inappropriate means of achieving legitimate objectives, for example due to fundamental climatic or geographic factors or fundamental technological problems. Setting up control bodies or agencies to assess compliance with technical rules; citizens of the parties to the dispute cannot be heard by a group of technical experts without the common agreement of the parties to the dispute, unless the group considers that the need for scientific expertise cannot be met by other means. Government officials of the parties to the dispute are not allowed to sit in a panel of technical experts. Members of technical expert groups perform their individual duties and are not representatives of the government or representatives of an organization. Governments or organizations therefore do not instruct them on the issues in front of a group of technical experts. 11.3 Members take, upon request, appropriate measures that could be made available to them to advise regulatory authorities on their territory, other members, particularly members of the developing country, to become advisory members of other members, particularly members of the developing country, and provide them with technical assistance on agreed terms with regard to the : based on performance requirements of the product and not on design or descriptive characteristics.