| 3. | The 18 chemicals are bacitracin , ceftiofur , colistin , danofloxacin , enrofloxacin , erythromycin , flumequine , gentamicin , ivermectin , kitasamycin , lincomycin , neomycin , oxolinic acid , sarafloxacin , spectinomycin , tiamulin , tylosin and virginiamycin . the government implemented the first and second phases of the regulation on december 31 , 2001 and january 31 , 2003 respectively to cover seven prohibited chemicals and 19 of the 37 chemicals for which mrls are prescribed
政府分别于二一年十二月三十一日和二三年一月三十一日起，实施规例的第一阶段和第二阶段管制，禁止使用法例列明的七种违禁化学物，以及三十七种订有最高残馀限量化学物的其中十九种。 |
