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. 我們提供我們的化工產品DL-1-(1-Naphthyl)ethylamine。 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 ...