1 . FREE MOVEMENT OF GOODS - QUANTITATIVE RESTRICTIONS - MEASURES HAVING EQUIVALENT EFFECT - PRODUCTION AND MARKETING OF PRODUCTS - DISPARITIES BETWEEN NATIONAL LAWS - OBSTACLES TO INTRA-COMMUNITY TRADE - PERMISSIBILITY - CONDITIONS AND LIMITS ( EEC TREATY , ART . 30 ) 2 . FREE MOVEMENT OF GOODS - QUANTITATIVE RESTRICTIONS - MEASURES HAVING EQUIVALENT EFFECT - PROHIBITION OF THE MARKETING OF BEER WHOSE ACIDITY EXCEEDS A MAXIMUM LEVEL - EXTENSION OF PROHIBITION TO BEER LAWFULLY PRODUCED AND MARKETED IN THE EXPORTING MEMBER STATE - PROHIBITION ( EEC TREATY , ART . 30 ) 3 . FREE MOVEMENT OF GOODS - QUANTITATIVE RESTRICTIONS - MEASURES HAVING EQUIVALENT EFFECT - PROHIBITION OF STATEMENT OF STRENGTH OF ORIGINAL WORT OF THE BEER ON PRE-PACKAGING OR LABEL THEREOF - EXTENSION OF PROHIBITION TO BEER LAWFULLY PRODUCED AND MARKETED IN THE EXPORTING MEMBER STATE - PROHIBITION - CONDITIONS ( EEC TREATY , ART . 30 )