Complex sentence: Industrial microbiology is one of the most important areas of applied microbiology which deals with screening, improvement, management, and exploitation of microorganisms for the production of various useful end products in large scale.
Split into simpler sentences: Industrial microbiology is one of the most important areas of applied microbiology. Basically, it deals with screening, improvement, management, and exploitation of microorganisms for the production of various useful end products in large scale.