Silodosin, ticagrelor,ciprofibrate,aminobutanol,alaninol,tyloxapol,etc. are our main products. Hangzhou Zhongchang scientific Co., Ltd. is a specialized pharmachemical manufacturer.founded in 2005, is located in hangzhou city, Our factory is in Shangyu Fine Chemical Park, Zhejiang province.Eyedrop API, amino acid hydrogening, is our strong technical direction. innovation is main job. local pharma enterprise , international trader is our important customer.