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 má v súčasnosti dve továrne, jedna je čistou prírodnou továrňou na rastlinné extrakty, druhá je továrňou na včelie produkty a máme sériu certifikátov ako ISO9001, ISO22000, HACCP, ORGANICAL, FDA, HALAL, KOSHER.