The petrochemical industry is an important part of the chemical industry，plays an important role in the development of the national economy，and is one of the pillar industries in China. A processing industry that uses petroleum and natural gas as raw materials to produce petroleum products and petrochemical products.

The fine chemical industry has a very close relationship with industry and agriculture，national defense，people's life and cutting-edge science. It is an important industrial sector closely related to economic construction and people's life，and is one of the strategic priorities of the development of the chemical industry.

Biochemical engineering is an interdisciplinary discipline composed of many disciplines such as biology, chemistry，engineering, etc. It studies basic theories and engineering techniques in the process of organisms or bioactive substances. It plays a key role in the industrialization of biotechnology.