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 het tans twee fabrieke, die een is 'n suiwer natuurlike plant ekstrak fabriek, die ander is 'n byproduk fabriek, en ons het 'n reeks sertifikate soos ISO9001, ISO22000, HACCP, ORGANICAL, FDA, HALAL, KOSHER.