The manufacturer of black wolfberry blueberry puree is Ningxia Fushou Kangning Dajian Health Biotechnology Co., Ltd., which is a formal small and micro enterprise company certified by Xiji County Market Supervision Administration. The main component of black wolfberry blueberry puree is citric acid, which has the functions of anti-fatigue, clearing liver-fire, improving eyesight, nourishing liver and kidney, anti-aging and enhancing immunity.