The plant business can be broadly divided into petrochemical/refining, offshore plants, beoljeon (thermal power, nuclear power, wind power) plants, desalination and other plants.

Plant refers to industrial infrastructure such as power generation, desalination, oil refining, petrochemical, crude oil and gas processing, offshore facilities, environmental facilities, etc.
In general, the plant is an industry that has the characteristics of both general manufacturing and service industry, as service contractors do not simply take charge of construction, but provide design, purchase, and construction in a turn-key way.