Korean Standard Industry Classification (10th revision, 2017)

Code A in the Korean Standard Industry Classification designates the Agriculture, Forestry and Fishing sector, encompassing

The B category covers establishments engaged in extracting natural mineral resources from the earth, including coal, metal ores, industrial minerals and stone, as well as the primary processing of these raw materials through activities such as quarrying, digging, drilling and blasting. It also includes support services directly related to mineral extraction, such as mine development and exploration.

The C category groups all establishments that transform raw materials or components into finished products through physical, chemical or mechanical processes, including primary production, secondary processing, assembly and related activities such as packaging and quality control.

The D category includes enterprises that generate, transmit, distribute, and sell electricity, natural gas, steam, and hot water, as well as those providing centralized air-conditioning and heating services. It covers activities such as power plant operation, pipeline transport, utility network maintenance, and the provision of climate-control systems to residential, commercial, and industrial customers.

The code E in the Korean Standard Industry Classification groups establishments that provide water supply services, collect and treat sewage, manage solid waste and recycling, and perform environmental remediation such as cleanup of contaminated sites. This category encompasses all activities involved in delivering safe water, disposing of waste, and restoring polluted environments.

The F category in the Korean Standard Industry Classification covers all activities related to building and civil-engineering works. It includes planning, design, erection, renovation and maintenance

The G sector of the Korean Standard Industry Classification covers enterprises engaged in the distribution of goods, including both wholesale activities that supply products to retailers, industrial users, and other business customers and retail operations that sell directly to final consumers through stores, e-commerce platforms, and other outlets.

In the Korean Standard Industry Classification (10th revision, 2017), code H designates the Transportation and Storage sector, which includes activities that move passengers and freight by road, rail, water, air or pipelines, as well as warehousing, cargo handling, logistics services, and postal and courier operations.

The I category of the Korean Standard Industry Classification covers businesses that provide lodging and meals to the public. It includes hotels, motels, guesthouses, and other accommodation services, as well as restaurants, cafes, bars, catering firms, and other establishments engaged in preparing and serving food and beverages.

The "J" category of the Korean Standard Industry Classification groups businesses that produce, transmit and process information and communication services. It includes publishing, motion-picture and sound recording, broadcasting, telecommunications, internet and data-processing services, as well as software development, information-technology consulting and related support activities. This sector covers all activities that create, distribute, or facilitate the flow of information.

The K category covers establishments that provide financial intermediation, investment, and insurance services, including banks, credit unions, securities firms, asset management companies, and insurers. Activities involve lending, deposit taking, risk pooling, underwriting, and ancillary support such as brokerage and financial advice.

Real estate activities encompass the acquisition, development, leasing, renting, and sale of land and immovable property. They also include property management, appraisal, and related services such as brokerage and consultancy for residential, commercial, and industrial real-estate markets. This sector covers all business that generates income from the use or transfer of real property.

The M category groups firms that provide knowledge-based services requiring professional expertise, scientific research, or technical skill. It includes activities such as legal and accounting advice, architectural and engineering design, management consulting, advertising, market research, and specialized scientific and technical testing and analysis.

The N category covers enterprises that provide management and support services for business facilities, including building operation, cleaning, security, landscaping, equipment maintenance, and other ancillary activities that help client companies maintain functional work environments.

The Korean Standard Industry Classification code O covers activities of central, regional and local government bodies that manage public policy, provide public services, and regulate society, as well as institutions responsible for national defence, including the armed forces and related security agencies.

Code P in the Korean Standard Industry Classification designates the education sector, covering establishments that deliver formal and informal learning at all levels, from early childhood and primary schools to secondary, vocational, and higher-education institutions, as well as specialized training providers and tutoring services. It includes both public and private entities that develop curricula, conduct instruction, and assess student performance.

The Q division of the Korean Standard Industry Classification covers establishments that provide medical, dental and pharmaceutical services, including hospitals, clinics, nursing homes and other health-care facilities, as well as organizations delivering social assistance, welfare and community support programs for individuals in need.

The R category includes establishments that create, produce, exhibit or manage artistic and cultural works, as well as those providing sports, fitness, amusement and other recreational services for public enjoyment. It covers activities such as museums, theatres, music production, sports clubs, gyms, amusement parks and related support services.

Code S groups entities that manage membership-based bodies such as professional, trade, cultural and recreational associations, as well as firms that provide repair services for personal items and a variety of personal-service activities including beauty, fitness, funeral, and other individual-oriented services. It captures organizations whose primary output is membership benefits or direct personal assistance rather than manufacturing or wholesale trade.

Code T covers activities where private households act as employers, hiring staff to provide domestic services such as cleaning, cooking, childcare, gardening, elderly or disabled care, and other personal household assistance. It includes employment of household employees and related payroll administration, but not commercial enterprises offering similar services to the public.

Code U covers the activities of extraterritorial organizations and bodies operating in Korea, such as foreign diplomatic missions, international agencies, and non-governmental entities that are not subject to domestic jurisdiction. It includes the provision of consular services, representation, and administrative support performed by these bodies.