The main products are: process equipment, heat transfer equipment, drying equipment, crystallization apparatus, evaporation equipment, transportation equipment. Products of our factory has developed into 20 major categories, more than 100 kinds of specifications varieties. Proprietary features of Engineering: the production of complete sets of projects of tannic acid, gallic acid production of complete sets of projects, activated charcoal production of complete sets of projects. Has its own intellectual property rights of the eight national patents, of which a multilayer vibrating fluidized bed dryer for a total of four national patents, is currently the leading domestic level.