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 वर्तमान मा दुई कारखानाहरु छन्, एक एक शुद्ध प्राकृतिक बिरुवा निकाल्ने कारखाना हो, अन्य एक मधुमक्खी उत्पादन कारखाना हो, र हामी ISO9001, ISO22000, HACCP, ORGANICAL, FDA, हलाल, कोषेर को रूप मा प्रमाण पत्र को एक श्रृंखला छ।