The Relationship between Chemical Industry and Our Life

(1) General chemicals refer to non-differentiated products produced in large quantities, such as fertilizers, sulfuric acid, caustic soda and general plastics.

(2) Quasi-general chemicals, also known as semi-general chemicals, refer to differentiated products produced in batches, such as carbon black, gunpowder and synthetic fibers.

(3) Fine chemicals refer to non-differentiated products produced in small batches, such as dyes, pigments, medicines and pesticides.

(4) Special chemicals refer to differentiated products produced in small batches, such as medicines, pesticides, photosensitive materials and mixed spices.

At present, the terms "fine chemicals" and "special chemicals" are commonly used abroad. Japan divides fine chemicals into 34 categories; However, China is temporarily classified as 1 1 (according to the Interim Provisions on the Classification of Fine Chemical Products issued by the former Ministry of Chemical Industry on March 6, 1986), namely pesticides, dyes, coatings (including paints and inks), pigments, reagents and high-purity substances, chemicals for information, food and feed additives and adhesives.