Chongqing Riutong Bio-chemical Co.,Ltd. ( Brief: C.R.T. Biochemical ) is a modern enterprise base on high level of science and technology and high standerd. Our factory are located in Sizhu, Chongqing ( the home of hydrastis famouse in China ). Covering an area of 15 acres, our total investment in first step is RMB8100000. we are mainly producing pure & nature Tannic Acid serises products which is based on the raw material: escape chinaese gullnut.

There are 75 workstaffs in our company, include 28 technical engineers. We have strong ability to research and develop the new products according to customers' requirements. With the famous professional's help from Nanjin Forest Chemical Research Institute, we improve the local & tradition production process, use the amortize solution extraction technic, successfully develop Tannic Acid Industry, Tannic Acid Dyestuff, Tannic Acid Pharmaceutical, Tanic Acid Food, Tannic Acid Brew and Gallic Acid (pure and nature) products. Our registered trade mark is "ShenYuan" brand. Our main products as following:

Tannic Acid 81% min.- Industry
Tannic Acid 86% min.- Pharma
Tannic Acid 86% min.- Dyestuff
Tannic Acid 92% min.- Fine
Tannic Acid 95% min.- Food
Tannic Acid 97% min.- Brew/Beer
Gallic Acid 99% min.- High Purity

Our factory are certified by ISO9001:2000 quality system authentication. All of its products meet the concerned China national standards and comply with British Pharmacopoeia (Ver.1993) and U.S. Pharmacopoeia (Ver.1995), and has obtained a qualification certifation from the Ministry of Forest of China.

Our motto is: use the high level of science and technology as the core of our development; the high quality is the base of market. You are welcome to visit & investigate our factory for our further co-operation.