Hangzhou DayangChem Co. Ltd is a comprehensive entity which specializes in development, production and trade of pharmaceutical, agrochemical and dyestuff intermediates as well as some special type reagents. We provide [bis[4-(Dimethylamino)phenyl]methylene]butylurea as well. We have an own factory and share enterprises. We act also as agent of many chemical factories and promote their products to the international m ...