Changsha Huakang Biotechnology Development Co.,Ltd. is a sub-company of The Institute of Traditional Chinese Medicine which is specializing in plant extracts especially tea products almost for five decades and now is the second largest institute of Chinese medicine.Depending on the technologies and talents of The Institute of Traditional Chinese Medicine,our company has become one of the largest professional manufacturer of plant extracts and the largest provider of the Black Tea Extract and the Green Tea Extract.If you are interested in our products,please contact me(Eric Law or )visit our website for more details.