As a leading plant extract manufacturer in china,Shaanxi Tianwei Biological Products Co.,LtdSpecializes in producing and offering Natural Tocopherol,Phytosterol,Stigmasterol and other plant extract .The company is a ISO-9000 Certified company with Kosher Certificateand Non-GMO IP certificate issued by GeneScan from Germany.For more information, please visit our web site:Http://www.tianweie.comFax:86-029-86030234Tel:86-029-86030149