1 . ECSC - PRODUCTION - PRODUCTION QUOTAS FOR STEEL - SPECIAL PROBLEMS OF THE GREEK STEEL INDUSTRY - TAKEN INTO CONSIDERATION BY THE COMMUNITY AUTHORITIES - CONDITIONS AND LIMITS ( ECSC TREATY , ART . 58 ) 2 . ECSC - PRODUCTION - PRODUCTION QUOTAS FOR STEEL - OBJECTIVE AND SCOPE ( ECSC TREATY , ART . 58 ) 3 . ECSC - PRODUCTION - PRODUCTION QUOTAS FOR STEEL - DIFFERENTIATION OF PRODUCTION RESTRICTIONS ACCORDING TO THE DIFFERENT CATEGORIES OF PRODUCTS - PERMISSIBILITY ( ECSC TREATY , ART . 5 , FIRST PARA .) 4 . ECSC - PRODUCTION - PRODUCTION QUOTAS FOR STEEL - DECISION 1831/81 - RELIEF CLAUSE IN FAVOUR OF GREEK UNDERTAKINGS - BASIS - POLITICAL DISCRETION OF THE COMMISSION - NO DUTY TO GUARANTEE A MINIMUM RATE OF UTILIZATION OF CAPACITY FOR ALL GREEK UNDERTAKINGS ( ECSC TREATY , ART . 58 ; GREEK ACT OF ACCESSION ; DECISION 1831/81 , ART . 14A )