OPINION OF THE ECONOMIC AND SOCIAL COMMITTEE on the proposal for a Council Regulation (EEC) extending into 1993 the application of Council Regulation (EEC) Nos 3831/90, 3832/90, 3833/90, 3834/90 and 3835/90 applying generalized tariff preferences for 1991 in respect of certain products originating in developing countries, and adding to the list of beneficiaries of such preferences.