Chemical reagents have variety kinds of many small, high quality, wide application, packaging, fast development, storage, transportation demand is high, the application in the field of sex, technical characteristics and is known as the eyes of the "science" and "quality scale". According to the product function and nature: can be divided into basic organic reagents, inorganic reagents, chromatography and spectral reagent, water quality analysis reagent, drug synthesis reagents, immunology and molecular biology reagents