I looked up some information on the Internet, for your reference: Rijiaman is from Shanghai Jin Dong Beverage Co., Ltd., which is a large-scale food and beverage production enterprise with Sino-foreign joint venture, specializing in the research and development and production of natural healthy functional foods. Rijiaman is a functional drink tailored to the characteristics of modern urbanites, especially the "elite", such as "sub-health, long-term physical and mental fatigue and heavy life pressure". According to the "barrel effect, a bucket of human nutrition", eight amino acids that are necessary but cannot be synthesized by human body are revolutionized, which fundamentally improves physical fitness and helps to maintain good health for a long time. Gaman contains guarana and various amino acids, among which guarana contains natural caffeine and is not addictive. Moreover, Guarana is produced in the Amazon basin and praised by Brazilians as "magic fruit", so Gaman is a healthy and green energy drink.