Profile: Xi'an Keen-source Bio-technology Co., Ltd. offers plant extracts for pharmaceutical intermediates, health food and cosmetic industries. Our plant extract products are echinacea herb, black cohosh, horsetail, epimedium and grape seed. Our echinacea herb plant extracts give protection against systemic and infectious diseases. Our grape seed plant extracts penetrate the blood-brain barrier to help protection of the brain and nerve tissue from oxidation.