Xi'an Tonking Biotech Co.,ltd,located in the R&D Park,Xi'an,Shaanxi.Our factory in Baoji,Shaanxi.We are a professional manufacturer of botanical extracts,Chinese herbal medicine raw materials,herbal liquid extract,Dehydrated vegetables,Juice powder. We own a team which dedicated to the R&D,production and marketing of botanical extract since 2008.We have advanced equipment and facilities which are used for the production of botanical extracts. In the past years, we researched and developed several hundred of producing technology of botanical extract, now our total annual production capacity of herbal raw material is about 5,000mt and we can supply more than 1000mt botanical extracts each year.We have herbal raw material cultivation base and production base in Baoji,Shaanxi, in which three modern production lines of botanical extract were established.Our major products include Huperzine A(Huperzia Serrata Extract),Resveratrol(Giant Knotweed Extract), Red Clover Extract,Echinacea Purpurea Extract, Bilberry Extract, Ginkgo Biloba Extract,Ginseng Extract, Zeaxanthin, Horse Chestnut Extract,Epimedium extract,Reishi Mushroom Extract, Schisandra Extract,Astragalus polysaccharides,St.John's.Wort P.E.,Citrus Aurantium Extract(Synephrine),etc.which mainly exported to United States, Europe, South East Asia, Australia and so on. All our products had met and/or exceeded our customers expectations.Xi'an Tonking Co.,ltd established a R&D team which is headed by several Doctors and/or Masters in Phyto-Chemistry, Pharmacology and Traditional Chinese medicines. Meanwhile, our R&D center are close cooperating with Xi'an Gaoxin District Engineering & Technology Research Center for Natural Products. The R&D center are equiped with modern analytical instrument such as HPLC,GC, TLC,UV,etc. All of this assure the reliable and stable quality of our products.Welcome to contact and visite us!