# Manufacturers headquartered in Gyeonggi

Tamtam tracks 43 manufacturers headquartered in Gyeonggi. This list ranks all of them by number of employees on LinkedIn, led by Samsung Electronics, Samsung Mobile and Samsung SDI. Their median headcount is 374. Half of them were founded in 1985 or later. The most common headquarters are Seongnam (6).

These manufacturing companies in Gyeonggi-do are primarily large firms, many of which are subsidiaries of the Samsung Group. They are concentrated in electronics, automotive parts, and specialized industrial equipment. For example, Samsung Electronics is a global technology leader in TVs, smartphones, and appliances, while HL Mando develops cutting-edge automotive parts. LS Cable & System provides global cable solutions.

Several companies are involved in motor vehicle manufacturing, such as Hankook Tire, which manufactures and supplies high-quality tires globally, and HYUNDAI TRANSYS, a global automotive parts supplier specializing in powertrain and seating components. The presence of multiple Samsung entities suggests a strong regional focus on electronic manufacturing and related industries.

🇰🇷 Gyeonggi · 43 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Samsung Electronics](https://www.tamtam.ai/c/samsung-electronics) (samsung.com)<br>A global technology leader, constantly innovating in TVs, smartphones, wearables, appliances, medical devices, and more Embracing diversity and creativity for growth | Computers and Electronics Manufacturing | 🇰🇷 Suwon-Si | 287,000 |  |
| 2 | [Samsung Mobile](https://www.tamtam.ai/c/samsung-mobile) (samsung.com)<br>This company specializes in providing secure and highly productive mobile solutions for enterprises, focusing on Android security and productivity on Samsung Galaxy devices worldwide | Consumer Electronics | 🇰🇷 Gyeonggi-do | 19,596 | 1969 |
| 3 | [Samsung SDI](https://www.tamtam.ai/c/samsung-sdi) (samsungsdi.com)<br>Development and production of innovative technology products with cutting-edge features, focusing on creativity and continuous improvement since 1970. | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Yongin-si | 4,080 | 1970 |
| 4 | [HL Mando](https://www.tamtam.ai/c/hl-mando) (hlmando.com)<br>A leading automotive parts company focused on developing cutting-edge technology and quality parts for safe vehicles on a global scale | Motor Vehicle Manufacturing | 🇰🇷 Seongnam | 3,561 | 1962 |
| 5 | [Samsung Display](https://www.tamtam.ai/c/samsung-display) (samsungdisplay.com)<br>Global leader providing cutting-edge display solutions with OLED and QD-OLED technology for smartphones, TVs, laptops, monitors, smartwatches, VRs, game consoles, and automotive applications. | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Yongin-si | 3,443 | 2012 |
| 6 | [Hankook Tire](https://www.tamtam.ai/c/hankook-tire-seongnam-si) (hankooktire.com)<br>Manufacture and supply high-quality tires globally, focusing on innovation, premium brands, and sustainable ESG management practices. | Motor Vehicle Manufacturing | 🇰🇷 Seongnam-si | 2,083 | 1941 |
| 7 | [LS Cable & System](https://www.tamtam.ai/c/ls-cable-and-system) (lscns.co.kr)<br>A global cable solutions provider offering state-of-the-art products, engineering services, and global production capacity to power authorities and carriers worldwide | Manufacturing | 🇰🇷 Anyang-si | 1,630 | 1962 |
| 8 | [HYUNDAI TRANSYS](https://www.tamtam.ai/c/hyundai-transys) (hyundai-transys.com)<br>A global automotive parts supplier specializing in powertrain and seating components for Hyundai and Kia Motors, with operations in Asia, Europe, and the Americas | Motor Vehicle Manufacturing | 🇰🇷 Hwaseong | 1,566 | 1994 |
| 9 | [Hyundai Rotem](https://www.tamtam.ai/c/hyundai-rotem) (hyundai-rotem.co.kr)<br>A diversified company within Hyundai Motor Group providing innovative and sustainable mobility solutions in the railway, defense, and plant & machinery systems sectors globally | Truck Transportation | 🇰🇷 Uiwang-si | 1,442 |  |
| 10 | [삼성중공업](https://www.tamtam.ai/c/company-96122908) (samsungshi.com)<br>A global leader in shipbuilding and offshore EPC projects, specializing in high-tech vessels like drillships, LNG carriers, FPSOs, and Arctic tankers | Shipbuilding | 🇰🇷 Seongnam | 1,423 | 1974 |
| 11 | [LIG Defense&Aerospace](https://www.tamtam.ai/c/lig-defense-and-aerospace) (ligdefenseaerospace.com)<br>The company develops and produces advanced precision electronic systems, including missile, radar, avionics, communication systems, and more for military and commercial applications globally | Defense and Space Manufacturing | 🇰🇷 Yongin-si | 1,144 | 1976 |
| 12 | [LS Automotive](https://www.tamtam.ai/c/ls-automotive) (lsautomotive.com)<br>A global vehicle components company with world-class quality, offering career opportunities, focused on customer satisfaction, sustainability, and innovation in automotive technologies | Motor Vehicle Manufacturing | 🇰🇷 Anyang-si | 938 | 1973 |
| 13 | [LS ELECTRIC](https://www.tamtam.ai/c/ls-electric) (ls-electric.com)<br>This company provides power systems and automated solutions for efficiency, sustainability, and clean energy, focusing on smart factories and energy solutions | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Anyang-si | 881 | 1974 |
| 14 | [ANY Corporation](https://www.tamtam.ai/c/any-corporation) (any21.co.kr)<br>Specialized manufacturer in Korea of medical and industrial monitors, offering OEM and ODM services to top companies worldwide ISO 9001 certified for quality assurance | Medical Equipment Manufacturing | 🇰🇷 Seongnam-si | 822 | 1995 |
| 15 | [GC Biopharma (GC녹십자)](https://www.tamtam.ai/c/gc-biopharma-gc) (gcbiopharma.com)<br>Biopharmaceutical company based in South Korea specializing in protein therapeutics and vaccines, with a focus on quality healthcare solutions for over 50 years | Pharmaceutical Manufacturing | 🇰🇷 Yongin-si | 660 | 1967 |
| 16 | [SOLUM](https://www.tamtam.ai/c/solum) (solum-group.com)<br>A global company specializing in power suppliers, tuners, and electronic shelf labels with locations in South Korea, USA, and Germany | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Yongin-si | 585 | 2015 |
| 17 | [KGM](https://www.tamtam.ai/c/kgm) (kg-mobility.com)<br>A leading Korean automotive manufacturer known for innovative SUVs and luxury sedans, with technical cooperation for competitive SUV production | Motor Vehicle Manufacturing | 🇰🇷 Pyeongtaek | 505 | 1954 |
| 18 | [SK chemicals](https://www.tamtam.ai/c/sk-chemicals) (skchemicals.com)<br>The company manufactures chemical products including PETG and PET resins for various industries, as well as life science products like anti-cancer agents and vaccines | Plastics Manufacturing | 🇰🇷 Seongnam-Si | 491 |  |
| 19 | [HD Construction Equipment](https://www.tamtam.ai/c/hd-construction-equipment) (hd-ce.com)<br>A leading manufacturer of construction equipment, engines, and utility equipment, supplying a range of products for various industries globally | Machinery Manufacturing | 🇰🇷 Seongnam-si | 469 | 1985 |
| 20 | [HD Hyundai Construction Equipment](https://www.tamtam.ai/c/hd-hyundai-construction-equipment) (hd-hyundaice.com)<br>Specialized manufacturer of construction equipment including excavators, wheel loaders, backhoe loaders, and skid loaders for construction and material handling | Machinery Manufacturing | 🇰🇷 Seongnam-Si | 416 | 2017 |
| 21 | [Ray](https://www.tamtam.ai/c/ray) (raymedical.com)<br>A global leader in dental imaging solutions, Ray Co, Ltd specializes in CBCT technology and digital dentistry products for global markets | Medical Equipment Manufacturing | 🇰🇷 Seongnam-Si | 378 | 2004 |
| 22 | [Hyundai Kefico Corporation (현대케피코)](https://www.tamtam.ai/c/hyundai-kefico-corporation) (hyundai-kefico.com)<br>The company designs, verifies, calibrates, and manufactures advanced electronic control systems for vehicles, with a focus on safety and efficiency | Motor Vehicle Manufacturing | 🇰🇷 Gunpo | 374 | 1987 |
| 23 | [Samsung Foundry](https://www.tamtam.ai/c/samsung-foundry) (samsung.com)<br>Specializing in advanced process and design technologies, Samsung Foundry offers a range of foundry capabilities, design services, and intellectual property solutions for high-volume manufacturing projects | Semiconductor Manufacturing | 🇰🇷 Yongin-si | 372 |  |
| 24 | [HD Korea Shipbuilding & Offshore Engineering Co., Ltd. (HD KSOE)](https://www.tamtam.ai/c/hd-korea-shipbuilding-and-offshore-engineering-co-ltd-hd-ksoe) (hdksoe.co.kr)<br>A shipbuilding business cluster focused on becoming a technology-oriented company with world-class R&D and engineering capabilities in the marine mobility industry | Shipbuilding | 🇰🇷 Seongnam | 367 |  |
| 25 | [KAON GROUP](https://www.tamtam.ai/c/kaon-group) (kaongroup.com)<br>Development and manufacturing of digital connectivity devices and services for PayTV and Broadband industries, offering integrated end-to-end solutions worldwide. | Telecommunications | 🇰🇷 Seongnam-Si | 366 | 2001 |
| 26 | [SD BIOSENSOR INC](https://www.tamtam.ai/c/sd-biosensor-inc) (sdbiosensor.com)<br>The company is dedicated to enhancing human health through the creation of groundbreaking products, prioritizing sustainable growth and community well-being | Medical Equipment Manufacturing | 🇰🇷 Suwon-Si | 365 | 2010 |
| 27 | [Wonik](https://www.tamtam.ai/c/wonik) (wonik.com)<br>A happy organization where human and technology coexist, embodying philosophical values in their approach to technology | Semiconductor Manufacturing | 🇰🇷 Seongnam-city | 363 |  |
| 28 | [Intellian Technologies](https://www.tamtam.ai/c/intellian-technologies) (intelliantech.com)<br>A global leader in satellite antenna systems, providing connectivity solutions for various industries, focusing on simplicity, innovation, and customer satisfaction | Satellite Telecommunications | 🇰🇷 Seongnam-Si | 348 | 2004 |
| 29 | [HD Hyundai Electric Co., Ltd.](https://www.tamtam.ai/c/hd-hyundai-electric-co-ltd) (hd-hyundaielectric.com)<br>A global provider in heavy electrical machinery, transitioning to digital solutions for the evolving power market with focus on ICT convergence and smart factory initiatives | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seongnam-Si | 342 | 1987 |
| 30 | [LS Mtron](https://www.tamtam.ai/c/ls-mtron) (lsmtron.com)<br>The company operates in machinery and components sectors, producing tractors, injection molding systems, track shoes for battle vehicles, and electronic components | Industrial Machinery Manufacturing | 🇰🇷 Anyang | 338 | 2008 |
| 31 | [MAY](https://www.tamtam.ai/c/may-hwaseong-si) (may-display.com)<br>Specializing in manufacturing and designing micro display panels, optic engines, and other electronic products, offering a one-stop total solution for clients | Semiconductor Manufacturing | 🇰🇷 Hwaseong-si | 338 | 2017 |
| 32 | [HD Hyundai](https://www.tamtam.ai/c/hd-hyundai) (hd-hyundai.com)<br>Global heavy industries company providing innovative solutions in shipbuilding, marine engineering, oil refining, petrochemicals, and energy management through its three core businesses | Holding Companies | 🇰🇷 Seongnam | 336 |  |
| 33 | [Samjin Co., Ltd](https://www.tamtam.ai/c/samjin-co-ltd) (samjin.com)<br>A global leader in smart control technology for the connected home, offering innovative solutions for controlling entertainment devices and home systems | Consumer Electronics | 🇰🇷 Anyang-si | 321 | 1975 |
| 34 | [Huons Global](https://www.tamtam.ai/c/huons-global) (huonsglobal.com)<br>A leading healthcare group with a focus on pharmaceuticals, medical devices, health functional foods, and ESG sustainability practices for a better future | Pharmaceutical Manufacturing | 🇰🇷 Seongnam | 308 | 1965 |
| 35 | [Wonik IPS](https://www.tamtam.ai/c/wonik-ips) (ips.co.kr)<br>A leading Korean semiconductor equipment company specializing in ALD, CVD, dry etchers, OLED deposition, and 3D NAND Flash systems with global aspirations | Semiconductor Manufacturing | 🇰🇷 Pyeongtaek-Si | 283 | 1981 |
| 36 | [CSK](https://www.tamtam.ai/c/csk) (csk.kr)<br>Top abatement company in South Korea providing agile solutions through professional service engineering team and high-tech technology for various processes | Semiconductor Manufacturing | 🇰🇷 Yongin | 240 | 1997 |
| 37 | [HK inno-n](https://www.tamtam.ai/c/hk-inno-n) (inno-n.com)<br>A leading pharmaceutical firm established in 1984, specializing in prescription drugs, active pharmaceutical ingredients, health supplements, and beauty products Committed to innovation and global growth | Pharmaceutical Manufacturing | 🇰🇷 Seongnam | 213 | 1984 |
| 38 | [동진쎄미켐](https://www.tamtam.ai/c/company-hwaseong-si) (dongjin.com)<br>A China-based company specializing in chemical manufacturing and distribution | Chemical Manufacturing | 🇰🇷 | 182 |  |
| 39 | [Global ZEUS (ZEUS Co., Ltd.)](https://www.tamtam.ai/c/global-zeus-zeus-co-ltd) (globalzeus.com)<br>The company provides high-quality solutions for the Semiconductor, Automation, LCD, LED, renewable energy, and IT industries through innovative products and exceptional customer support | Semiconductor Manufacturing | 🇰🇷 Hwaseong-si | 44 | 1970 |
| 40 | [Bersano](https://www.tamtam.ai/c/bersano-winery) (bersano.it)<br>Cultivating own grapes, overseeing production from vineyard to bottle, and safeguarding historic estates and museums, this producer brings elegant Piedmontese wines to the world. | Wineries | 🇰🇷 Nizza Monferrato | 39 | 1907 |
| 41 | [XAVIS](https://www.tamtam.ai/c/xavis) (xavisxray.com)<br>Specializing in automated X-ray detection equipment, food/medicine/packaging testing devices, and automation solutions for electronic and machine product manufacturing processes with a focus on quality control | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seongnam-Si | 33 | 2002 |
| 42 | [EQ GLOBAL Inc.](https://www.tamtam.ai/c/eq-global-inc) (eq-global.co.kr)<br>Global leader in power solutions, specializing in semiconductor and FPD manufacturing equipment development, maintenance, and solutions on a worldwide scale | Semiconductor Manufacturing | 🇰🇷 Yongin-si | 27 | 2001 |
| 43 | [FTC Korea](https://www.tamtam.ai/c/ftc-korea) (ftckorea.com)<br>The company specializes in developing various precision chemical products such as catalysts, surfactants, additives for coatings, resins, flow control agents, and raw materials for cosmetics | Chemical Manufacturing | 🇰🇷 Pyeongtaek | 21 | 1999 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

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- [Companies with in-house R&D in Gyeonggi](https://www.tamtam.ai/l/r-and-d-companies-gyeonggi) (56)
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- [IT Services and IT Consulting companies in Gyeonggi](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-gyeonggi) (31)
- [Companies with a mobile app in Gyeonggi](https://www.tamtam.ai/l/companies-with-mobile-app-gyeonggi) (30)
- [Publicly traded companies in Gyeonggi](https://www.tamtam.ai/l/publicly-traded-companies-gyeonggi) (26)

## The same list elsewhere in South Korea

- [Manufacturers in South Korea](https://www.tamtam.ai/l/manufacturers-south-korea) (172)
- [Manufacturers in Seoul](https://www.tamtam.ai/l/manufacturers-seoul) (70)

## The same list elsewhere

- [Manufacturers in the world](https://www.tamtam.ai/l/manufacturers-in-the-world) (39,579)
- [Manufacturers in Asia](https://www.tamtam.ai/l/manufacturers-in-asia) (6,095)

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Source: https://www.tamtam.ai/l/manufacturers-gyeonggi