Henan Yunkce import and export trade co., ltd . is a professional company, engaged in pharmaceutical raw materials, intermediates, plant extracts, dyes and fine chemicals import and export enterprises. We have our own product research and development center ,have our own production base. The main products include Quercetin, Astaxanthin,Amorolfine,Hydrochloride, Rifampicin, Avermectins, Lappaconite Hydrobromide,Rutin.