Hunan Linong Trade Co., Ltd., established in July, 2007, with registered capital of 8.58 million yuan is a private joint-stock enterprise. The company covers an area of 20mu, building area of 3200 square meters and has 75 staff including 12 technicists. We are mainly engaged in R&D of tannic acid, gallic acid, benzoic acid, pyrogallic acid and other gallnut products. Gallnut can be made into tannic acid, gallic acid, benzoic acid, pyrogallic acid by hydrolysis acidification. The products are mainly used in medicine, printing and dyeing, food processing, organic synthesis, national defense industries. The project set ecological, social benefit and economic benefit together