Located in Xi’an，one of the most ancient city in China， Xian Welldon Trading Co., Ltd was established in 1990 with the tenet of supplying the best chemical & nutraceutical raw materials of Chinese origin to the world market. Since the day it was founded, Welldon Trading has been devoting itself to fulfilling this perpetual commitment. In 1998, we embraced the advent of a new era in the history of our company when Welldon Bio-tech, the branch company of Welldon Trading, was established, which is...