A mixture of: 7-chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid and 5-chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carb, China A mixture of: 7-chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid and 5-chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carb Selling, Selling China A mixture of: 7-chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid and 5-chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carb, Jiangsu Licheng Chemical Co., Ltd.