Shandong Century Bio-extract Research Co.,Ltd is established in late 1995,and factory located in Yunnan,with Related GMP .We are mainly in line of manufacturing Diosmin, Red Clove Extract, Troxerutin    , Rhamnose, Iso-quercetin, Luteolin and other plant extracts.with more than 10 years experience,we have exported our plant extract to many countries in South America,USA,Canada,West Europe,Russia,Japan and some East Asia countries.Now,we ...