Vitajoy Group USA , a leading supplier of herbal extracts, amino acids and nutritional supplements, started our business in China and branched out our business with four overseas offices around the world. Vitajoy is strengthening the extent and scope of our sourcing ability, not only in China, but also in other regions. Vitajoy is building a global sourcing network to constantly provide exciting new raw materials, finished products, specialty chemicals and innovative ideas to our customers.