Nanjing Longyuan Natural Polyphenol Synthesis Factory situated in Nanjing High-tech Development Zone is an enterprise integrating research,development,production and marketing.It is originated from persons with long experience in research and technology in natural tannins in the Research Institute of Chemical Processing and Utilization of Forest Products,Chinese Academy of Forestry.Its products have formed a complete family.The factory possesses a highly skilled scientific and technological team,updated testing facilities,improved producing process and advanced synthesis equipments.As a result,the factory was awarded the title of "High-tech Enterprise"after half a year operation.It soon stepped into healthy circulation and made quick progresses successively……