Nanjing Tong Rui Bio-Tech Co., Ltd. referred to as TRB, has been focusing on natural extracts more than 20 years, TRB is a technology-based company that combines R&D, production and international market sales. TRB products include the plant extracts, animal extracts, sweeteners, nootropics, fruit juice and vegetable powders, essential oils and nutrition supplements. TRB hà attualmente duie fabbriche, una hè una fabbrica pura di estratti di piante naturali, l'altra hè una fabbrica di prudutti apiculi, è avemu una serie di certificati cum'è ISO9001, ISO22000, HACCP, ORGANICAL, FDA, HALAL, KOSHER.