Refers to any substance or mixture of substances used in the manufacture of pharmaceuticals. This substance has pharmacological activity or other direct effects or can affect the function or structure of the body in the diagnosis, treatment, symptom relief, treatment or prevention of disease. .

Use coal tar or petroleum products as raw materials to produce intermediate products of dyes, pesticides, medicines, resins, additives, plasticizers, etc. Because it was originally used to make dyes, it is also called dye intermediates...

Refers to those chemical products that have specific application functions, are technology-intensive, have strong commercialization, and have high added value. A chemical company that produces fine chemicals, commonly known as fine chemical industry, referred to as fine chemical...

A class of organic compounds that can give other substances a bright and firm color. Because the pigments used today are all synthetic, they are also called synthetic dyes. Dyestuffs and pigments generally have their own colors, and can be in a molecular or dispersed state...

In order to improve food quality and color, aroma, taste, and chemical synthesis or natural substances added to food for the needs of antiseptic and processing technology. Food additives are generally not food, and may not have nutritional value...