1. Quantitative restrictions: article XI GATT General prohibition: a cornerstone of the GATT system. The prohibition applies to imports and exports. Broad concept of quantitative restrictions: -Non-mandatory measures; -De facto restrictions (Argentina – Hides and Leather). Specific rules for agricultural products and textiles.

2. Quantitative restrictions: article XIII GATT Quantitative restrictions can be applied in some cases, but they must: - be non-discriminatory; - aim at a fair distribution of trade (as close as possible to the shares Member could obtain in the absence of such restrictions: allocation of quotas between all States having a substantial interest); - be neutral in application and administered in a fair and equitable manner (import-licensing procedures);

3. Other non-tariff barriers: article X GATT Prompt publication of measures affecting trade in goods; no application before publication. Establishment of enquiry points. Uniform, impartial and reasonable administration Objective and impartial review procedures.

4. Market access barriers to trade in services No general prohibition. Progressive achievement of liberalisation through rounds of negotation: reciprocity and flexibility for developing countries. Schedules of specific committments: agreements between States.

5. Other barriers to trade in services Prompt publication of measures affecting trade in services. Uniform, impartial and reasonable administration Limits to domestic regulation (objectivity and transparency, no excessive burdens). Encouragement of recognition of foreign diplomas and certificates: objective criteria and non-discrimination.

6. Customs duties (I) No prohibition. Negotiation between Members about concessions on a product-by-product basis or under the linear reduction approach: schedules of concessions Principle of reciprocity and mutual advantage: relative reciprocity for developing countries MFN treatment

7. Customs duties (II) Binding character of the schedules. Members must accord to products imported from other Members treatment no less favourable than that provided in the Schedule and those products will be exempt from ordinary customs duties in excess. Type of customs duties. Classification of products (Convention on harmonised system).