These companies in Gyeonggi are primarily large and mid-sized firms specializing in hardware manufacturing. The list includes technology giants such as Samsung Electronics, a global leader in TVs, smartphones, and various appliances, and Samsung Mobile, which focuses on secure mobile solutions for enterprises. Other notable firms are HL Mando, an automotive parts company, and Samsung Display, a provider of advanced display solutions. The manufacturing activities span consumer electronics, automotive components, and specialized industrial hardware.
A significant pattern observed is the strong presence of companies within the Samsung group, indicating a concentration of related manufacturing expertise in the region. Many of these firms also show a focus on innovation and cutting-edge technology in their respective fields, such as LS Electric in power systems and automated solutions, and Hyundai Rotem in railway, defense, and plant systems.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Samsung Electronicssamsung.com
A global technology leader, constantly innovating in TVs, smartphones, wearables, appliances, medical devices, and more Embracing diversity and creativity for growth |
287,000 | |||
| 2 |
Samsung Mobilesamsung.com
This company specializes in providing secure and highly productive mobile solutions for enterprises, focusing on Android security and productivity on Samsung Galaxy devices worldwide |
19,596 | |||
| 3 |
Samsung SDIsamsungsdi.com
Development and production of innovative technology products with cutting-edge features, focusing on creativity and continuous improvement since 1970. |
4,080 | |||
| 4 |
HL Mandohlmando.com
A leading automotive parts company focused on developing cutting-edge technology and quality parts for safe vehicles on a global scale |
3,561 | |||
| 5 |
Samsung Displaysamsungdisplay.com
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. |
3,443 | |||
| 6 |
Hyundai Rotemhyundai-rotem.co.kr
A diversified company within Hyundai Motor Group providing innovative and sustainable mobility solutions in the railway, defense, and plant & machinery systems sectors globally |
1,442 | |||
| 7 |
삼성중공업samsungshi.com
A global leader in shipbuilding and offshore EPC projects, specializing in high-tech vessels like drillships, LNG carriers, FPSOs, and Arctic tankers |
1,423 | |||
| 8 |
LS Automotivelsautomotive.com
A global vehicle components company with world-class quality, offering career opportunities, focused on customer satisfaction, sustainability, and innovation in automotive technologies |
938 | |||
| 9 |
LS ELECTRICls-electric.com
This company provides power systems and automated solutions for efficiency, sustainability, and clean energy, focusing on smart factories and energy solutions |
881 | |||
| 10 |
POSCO DXposcodx.com
A leading provider of total smart industry IT solutions, POSCO ICT offers engineering, automation, system integration, and IT outsourcing services with a focus on green growth and innovation |
844 | |||
| 11 |
ANY Corporationany21.co.kr
Specialized manufacturer in Korea of medical and industrial monitors, offering OEM and ODM services to top companies worldwide ISO 9001 certified for quality assurance |
822 | |||
| 12 |
Humaxhumaxmobility.com
A global provider of total mobility solutions, advanced technologies, and premium content delivery systems for operators, consumers, and vehicle brands worldwide |
587 | |||
| 13 |
SOLUMsolum-group.com
A global company specializing in power suppliers, tuners, and electronic shelf labels with locations in South Korea, USA, and Germany |
585 | |||
| 14 |
Hanwha Visionhanwhavision.com
A leading provider in the global video surveillance industry, specializing in optical design, image processing, cybersecurity, AI, and cloud technologies |
550 | |||
| 15 |
HD Construction Equipmenthd-ce.com
A leading manufacturer of construction equipment, engines, and utility equipment, supplying a range of products for various industries globally |
469 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
HD Hyundai Construction Equipmenthd-hyundaice.com
Specialized manufacturer of construction equipment including excavators, wheel loaders, backhoe loaders, and skid loaders for construction and material handling |
416 | |||
| 17 |
Rayraymedical.com
A global leader in dental imaging solutions, Ray Co, Ltd specializes in CBCT technology and digital dentistry products for global markets |
378 | |||
| 18 |
Hyundai Kefico Corporation (현대케피코)hyundai-kefico.com
The company designs, verifies, calibrates, and manufactures advanced electronic control systems for vehicles, with a focus on safety and efficiency |
374 | |||
| 19 |
KAON GROUPkaongroup.com
Development and manufacturing of digital connectivity devices and services for PayTV and Broadband industries, offering integrated end-to-end solutions worldwide. |
366 | |||
| 20 |
SD BIOSENSOR INCsdbiosensor.com
The company is dedicated to enhancing human health through the creation of groundbreaking products, prioritizing sustainable growth and community well-being |
365 | |||
| 21 |
Intellian Technologiesintelliantech.com
A global leader in satellite antenna systems, providing connectivity solutions for various industries, focusing on simplicity, innovation, and customer satisfaction |
348 | |||
| 22 |
HD Hyundai Electric Co., Ltd.hd-hyundaielectric.com
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 |
342 | |||
| 23 |
LS Mtronlsmtron.com
The company operates in machinery and components sectors, producing tractors, injection molding systems, track shoes for battle vehicles, and electronic components |
338 | |||
| 24 |
Samjin Co., Ltdsamjin.com
A global leader in smart control technology for the connected home, offering innovative solutions for controlling entertainment devices and home systems |
321 | |||
| 25 | 283 | ||||
| 26 | 240 | ||||
| 27 |
Suprema Inc.supremainc.com
Global innovator in access control and AI-based biometric solutions, simplifying enterprise security with facial recognition, fingerprint authentication, mobile credentials, and more |
210 | |||
| 28 |
Global ZEUS (ZEUS Co., Ltd.)globalzeus.com
The company provides high-quality solutions for the Semiconductor, Automation, LCD, LED, renewable energy, and IT industries through innovative products and exceptional customer support |
44 | |||
| 29 |
XAVISxavisxray.com
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 |
33 | |||
| 30 |
EQ GLOBAL Inc.eq-global.co.kr
Global leader in power solutions, specializing in semiconductor and FPD manufacturing equipment development, maintenance, and solutions on a worldwide scale |
27 | |||
| 31 |
YOLKyolkstation.com
Innovative company developing solar-powered products to address social and energy challenges, recognized for award-winning projects like Solar Cow |
7 | |||
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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.
More company lists in Gyeonggi
- The largest companies in Gyeonggi 147
- Companies with in-house R&D in Gyeonggi 56
- Multinational companies in Gyeonggi 55
- Manufacturers in Gyeonggi 43
- IT Services and IT Consulting companies in Gyeonggi 31
- Companies with a mobile app in Gyeonggi 30
- Publicly traded companies in Gyeonggi 26