We focu on deeply separating coal tar distillate for five years.Our product contai quinoline series and pyridine series,eg,quinoline,isoquinoline,2-quinoline,4-quinoline,6-quinoline,8-mythylquinoline,1-methylisoquinoline,2,3-lutidine,2,4-lutidine,2,5-lutidine,2,6-lutidine,2,4,6-trimethylpyridine,etc.