Samsung is Top Number 1 company in South Korea by Market Capitalization as on Aug-31-2018 and second biggest company in world in Electronics Manufacturing company with 307 Billion USD Market Capitalization as on Aug-30-2018. Samsung manufactures Mobiles, Laptops, Home Appliances, TVs, Refrigerators and many other Electronic Devices.

Semiconductor Company with headquarters in South Korea. Manufactures Products related to DRAM, SSD, Image Sensor, Chips, NAND etc

Automobile Manufacturing company with headquarters in South Korea.

Chemical Company with headquarters in South Korea.

Bio Pharmaceutical Company with headquarters in South Korea.

Manufactures Cosmetics, Household Goods, Beverages with headquarters in South Korea.

Biopharmaceutical Manufacturing Company with headquarters in South Korea.

Internet Company and Web Portal Business with headquarters in South Korea.

Construction, Trading, Fashion, Resorts are four Core businesses with headquarters in South Korea.

Automotive Parts Manufacturing Company with headquarters in South Korea. They have 25,216 employees as on 2018.

Module Parts Manufacturing:
Hyundai Mobis wields its cutting-edge vehicle modularization technology to manufacture and supply chassis modules, cockpit modules for car makers. Though collaboration with car makers, the advanced module parts at Hyundai Mobis are perfected from the very initial stage of R&D, from design to testing.

Conglomerate company with business segments Chemicals, Energy, Telecom, Construction, Shipping, Infrastructure, Semicounductors and many more. Headquarters in South Korea.

Leading Energy and Petrochemical Company, Petroleum Refining, Oil and Gas Exploration company with headquarters in South Korea. 

Insurance Company with headquarters in Seoul, South Korea.

Information Technology Company with headquarters in Seoul, South Korea.

Insurance Company with headquarters in South Korea.

Tobacco and Tobacco Products company with headquarters in South Korea.

Samsung SDI is a manufacturer of the rechargeable batteries for IT industry, automobiles and energy storage systems (ESS), as well as cutting-edge materials used to produce semiconductors, displays, and solar panels. Headquarters in South Korea.

Conglomerate Company with subsidiary companies working in Electronics, Telecom, Chemical sectors.

Second Largest Automobile Company in South Korea with headquarters in Seoul, South Korea.

Electronics Company with headquarters in Seoul, South Korea.

What LG Electronics Manufactures?

Home Appliance & Air Solution 
Refrigerators, Washing machines, Dishwashers, Cooking appliances, Vacuum cleaners, Built-in appliances, Air conditioners, Air purifiers, Dehumidifiers

Home Entertainment
TVs, Audio & Video, Monitors, PCs & Accessories, Commercial Products

Mobile Communications
G Series, V Series, K Series

Manufactures and sells Personal Care Products, Skin Care Products, Cosmetics, Beauty Care Products. Company headquarters is in South Korea.

Hana Financial Group dedicates itself to customer satisfaction and happiness through a comprehensive range of financial products and services for each stage of life. As part of these services, its premier financial service network leads the industry by creating synergy among its subsidiaries in banking, securities, credit cards, capital, and insurance.

Petroleum Refining, Petro Chemical Products Production, Lubricant Products is the core business of S-Oil. Headquarters in South Korea.

Software related Games developing company with headquarters in South Korea.

Chemicals manufacturing company with headquarters in South Korea.

Video Development Company with headquarters in South Korea.

Manufactures Ships, Marine Engines, Power Engines. Headquarters in South Korea.

Internet company and mobile app messaging with headquarters in South Korea.

Banking company with headquarters in South Korea.

Samsung Electro-Mechanics has become a remarkable developer and manufacturer of key electronic components not only in Korea but also in other parts of the world. Samsung Electro-Mechanics has been leveraging its technological excellence in key areas, such as high-frequency wireless materials and power/precision mechanics to further develop its strategic technology and to generate synergic effect in its businesses.

Manufactures water purifiers, air purifiers, bidets, water softeners, mattresses, cosmetics, and other life convenience products
 

Telecom Company with headquarters in South Korea.

Manufactures Personal Care, Skin Care, Beauty Care, Make Up Products. Headquarters in South Korea.

Steel Making company with headquarters in Seoul, South Korea.

Manufactures Compressors, Cooling Module, Electrified Vehicle and Hybrid Thermal Systems, Heating, Ventilation and Air Conditioning (HVAC), Fluid Transport, Pumps and Valves. Head Quarters in South Korea

Steel Manufacturing Company with headquarters in South Korea.

Pharmaceutical Company with headquarters in South Korea.

Conglomerate company with business segments Hotels, Finance, Chemical, Housing, Amusement and Entertainment, Food Products etc

Tires manufacturing for vehicles, cars etc.

Hanmi Pharm is a Korean Pharmaceutical industry by focusing on R&D.

Food Company with headquarters in Seoul, South Korea. Manufactures pharmaceutical products as well.

Insurance Company with headquarters in South Korea.

Retail Company with Retail Stores across South Korea.

Logistics Company with headquarters in Seoul, South Korea.

Natural Gas Production and Distribution Company with headquarters in South Korea. Maintains pipelines across South Korea.

Transportation and Logistics company with headquarters in South Korea. Transports Cargo.

Credit Card company with headquarters in Seoul, South Korea.

Sports Goods Company with headquarters in South Korea.

Confectioneries Company with headquarters in South Korea.

Insurance Company with headquarters in South Korea.

Chemical Company with headquarters in Seoul, South Korea.

Provides Security Services with headquarters in South Korea.

Operates chain of Convenience Stores across South Korea.

Aerospace Company with headquarters in South Korea.

Infrastructure Fund company in South Korea

Cement Manufacturing company with headquarters in South Korea.