Gallnut is a kind of Chinese traditional botanical. It is the gall of rhus semialata, which is an abnormal growth of plant tissue produced by irritants (released by gall insects). Gallnut has been acted as a kind of herb for more than 2000 years in China.
Gallnut is a special native product which main distributes in China. The annual yield gallnuts in China almost occupies 95% total yield of the world. Gallnut yield of Guizhou province is the richest in China. Our company is located in this area.
Gallnut contains the highest naturally occurring level of tannin, from 50%~75%. Beside, it consists of gallic acid, ellagic acid, glucose, starch, cellulose, xylogen, gum, and resin.
Now, gallnut’s chemicals are widely used in Pharmaceuticals, food, feed additives,

petroleum drilling, dyestuff, metallurgy, and so on. In modern industries, as

a very useful natural raw material, gallnut is more and more

important for its ecological significance.