++++ ACTION FOR ANNULMENT - NATURAL OR LEGAL PERSONS - MEASURES OF DIRECT AND INDIVIDUAL CONCERN TO THEM - PROVISIONS OF A REGULATION ACCEPTING PRICE UNDERTAKINGS OFFERED BY AN EXPORTER IN CONNECTION WITH AN ANTI-DUMPING PROCEEDING - APPLICATION BY AN IMPORTER -INADMISSIBLE ( EEC TREATY, ART . 173, SECOND PARAGRAPH; COUNCIL REGULATION NO 2176/84, ART . 10; COMMISSION REGULATION NO 2800/86, ARTS 2 AND 3 )