Commission Regulation (EEC) No. 3421/90 imposing a provisional anti-dumping duty on imports of aspartame originating in Japan and the United States of America 26 November 1990 - World Trade and Arbitration Materials View Commission Regulation (EEC) No. 3421/90 imposing a provisional anti-dumping duty on imports of aspartame originating in Japan and the United States of America 26 November 1990 by - World Trade and Arbitration Materials Commission Regulation (EEC) No. 3421/90 imposing a provisional anti-dumping duty on imports of aspartame originating in Japan and the United States of America 26 November 1990 3 1 World Trade and Arbitration Materials