Woojin Inc

What Woojin Inc does

Woojin Inc is a South Korea-based precision measurement instrumentation company founded in 1980, operating as a publicly listed corporation (WOOJIN CO.,LTD.) with 101-250 employees and headquarters in Hwaseong-si (Dongtan), Gyeonggi-do. The company designs and manufactures industrial sensors and monitoring systems across four core technology platforms: Condition Monitoring Systems (vibration sensors, eddy-current displacement sensors, online monitors and portable diagnostic devices for rotating machinery), Temperature Sensors (thermocouples, RTDs, thermowells spanning -260°C to 2300°C), Flow Measurement and KOLAS-accredited Calibration Systems (with the world's highest Reynolds-number calibration facility at 2.5×10^7), and Steel Mill Automation Equipment (Main/Sub Lance systems, continuous casting devices, bubbling systems, and mold level measurement). A fifth business covers New Materials — High Silicon Cast Iron and Mixed Metal Oxide anodes for cathodic protection — and a sixth covers Nuclear Instrumentation (Class 1E qualified ICI, RSPT, HJTC, Fast Response RTD, CEDM coils, cable assemblies) plus emerging nuclear decommissioning and decontamination technology.

The company sells primarily through direct B2B enterprise channels to heavy-industry customers: Korea Hydro & Nuclear Power (KHNP) and other nuclear operators for safety-grade instrumentation; POSCO, Hyundai Steel, Dongkuk Steel, and overseas steel mills (Brazil CSP, Indonesia KRAKATAU, Vietnam Formosa Ha Tinh, POSCO VST) for automation equipment; and oil & gas majors and NOCs (KNOC, KOGAS, Hyundai Oil Bank, Kuwait National Petroleum, Aramco, Borouge, National Iran Oil Company) for custody-transfer flow metering, proving systems, and cathodic-protection anodes. Revenue is generated from hardware sales, project-based commissioning and engineering services, and KOLAS-accredited flow calibration and training services. Pricing is quote-based and not publicly disclosed. Woojin holds 353 IP rights across 8 countries and operates subsidiaries including WOOJIN JAPAN, Woojin N-TEC, and Woojin F-TEC.

The business model combines a deep installed base in regulated industrial verticals (nuclear, oil & gas, steel) with project-driven expansion into new geographies (Middle East, Southeast Asia) and emerging adjacencies (nuclear decommissioning, AI-enabled industrial decisioning). Woojin's competitive position rests on multi-decade R&D heritage (Korea's first measurement technology research institute, established 1987), regulatory certifications (KOLAS/ILAC-MRA, Class 1E nuclear, ISO 9001/14001/45001, ASTM, DNV, NACE), and proprietary calibration infrastructure that is unique in Korea.

Name

Woojin Inc

Legal name

WOOJIN CO.,LTD.

Website

https://woojininc.com

Company type

Public

Founded year

1980

Operating status

Operating

Headcount range

101–250 employees

Short description

Woojin Inc is a South Korean precision instrumentation manufacturer founded in 1980, serving heavy-industry customers (nuclear, steel, oil & gas, petrochemical) with temperature sensors, flow metering and KOLAS-accredited calibration, condition monitoring systems, and steel-mill automation equipment.

Ownership category

akta.pro rank

Product category

Industrial Instrumentation

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Totalizing Fluid Meter and Counting Device Manufacturing (334514), Other Measuring and Controlling Device Manufacturing (334519)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Totalizing Fluid Meters & Counting Devices (3824), Laboratory Analytical Instruments (3826)

akta.pro primary industry

Sensors & Instrumentation Electronics Manufacturing Services (Transmitters, analyzers, industrial sensors) (IMAGAGAL)

akta.pro secondary industries

Test, Measurement & Calibration Equipment Manufacturing Services (ATE, DAQ, metrology electronics) (IMAGAGAH), Controls, Monitoring & Condition Management (for Pumps/Compressors) (IMAHANAI)

Keywords

• Industrial instrumentation
• Temperature sensors
• Flow measurement
• Condition monitoring
• Nuclear instrumentation

Headquarters

HQ city

Seongnam

HQ country

South Korea

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Industrial Instrumentation and Measurement Equipment Sales: Woojin generates revenue through the sale of precision measurement and instrumentation equipment including temperature sensors, flow meters, condition monitoring systems, automation equipment for steel plants, nuclear instruments, and advanced materials (anodes). The company operates on a project-based B2B model with custom-designed systems for each industrial application. Revenue includes both product sales and associated commissioning/engineering services.
2. Flow Meter Calibration Services: WOOJIN Flow R&D Center provides world-class flowmeter calibration services as an internationally accredited KOLAS calibration institute meeting ISO/IEC 17025 requirements. Services cover differential pressure, electromagnetic, Coriolis, vortex, positive displacement, turbine, ultrasonic, and open channel flowmeters. Includes field calibration using volumetric flowmeter calibration devices (Provers).
3. Flow Measurement Training Services: WOOJIN R&D Center offers flow measurement training services for related engineers in industrial sites. Contact via WOOJIN R&D Center (TEL 031-650-0710 / E-MAIL [email protected]).

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Woojin Inc manufactures and supplies precision industrial measurement instrumentation and automation systems, including temperature sensors (thermocouples, RTDs, thermowells), flow metering and calibration systems, condition monitoring systems for predictive maintenance, steel-mill automation equipment (lance, bubbling, sampling and casting systems), nuclear-grade instrumentation, and advanced anode materials (H.S.C.I and MMO). Products are sold directly to enterprise customers in nuclear power, steel manufacturing, oil & gas, petrochemical, semiconductor and power-generation industries, with associated KOLAS-accredited flow calibration services and turnkey engineering, installation and commissioning.

Product overview

Woojin Inc is a precision measurement technology company founded in 1980, offering an integrated portfolio of industrial sensing and automation solutions. The product portfolio centers on three core systems: (1) Condition Monitoring System (CMS) comprising sensors, monitors, eddy-current displacement sensors, and portable diagnostic devices for predictive maintenance of rotating machinery; (2) Temperature Sensors including thermocouples, RTDs, and thermowells for semiconductor, steel, petrochemical, and power generation industries; (3) Flow systems including KOLAS-accredited calibration services and metering systems (liquid, gas, proving) for oil, gas, shipbuilding, and nuclear applications; and (4) Automation Equipment for steel manufacturing including Main/Sub Lance systems, bubbling systems, continuous casting devices, and molten metal measurement equipment. Additional offerings include New Materials (H.S.C.I and MMO anodes for cathodic protection), Nuclear R&D services for reactor instrumentation and decommissioning technology. The company operates with 287 patents and has established itself as Korea's first measurement technology research institute.

Differentiator

Problem solved

Functional benefit

Products and services

• Condition Monitoring System (CMS)

Quantifiable outcome

• Record-high Q3 2025 operating profit of 9.8 billion KRW (approximately $7.3M USD)
• +4 more outcomes

Named customers43 records

Segments6 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration12 records

AI capability5 records

Feature9 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• International Laboratory Accreditation Cooperation (ILAC) / APLACcoreStrategic or Co-development PartnerWOOJIN Flow R&D Center is a member of the ILAC-MRA network. Calibration certificates issued by Woojin have the same international effect as certificates from ILAC and APLAC accredited institutions worldwide.
• KOLAS (Korea Laboratory Accreditation Scheme)coreStrategic or Co-development PartnerWOOJIN Flow R&D Center is a KOLAS accredited calibration institute meeting ISO/IEC 17025 requirements. Certificate number KC03-162, accredited from April 2022.
• VUHZ (Czech Republic)coreTechnology or IntegrationWOOJIN has a technical cooperation agreement with VUHZ in Czech Republic for the supply of continuous casting mold level measurement systems. This partnership enables stable supply of optimized mold level measurement systems.
• 한국지노(주) (Korea GenO)minorOthersListed as a related/affiliated company under the Woojin family site.
• 한국나가노(주) (Korea Nagano)minorOthersListed as a related/affiliated company under the Woojin family site.
• 오벌엔지니어링(주) (Oval Engineering)minorOthersListed as a related/affiliated company under the Woojin family site.
• (주)우진엔텍 (Woojin N-TEC)minorOthersListed as a related/affiliated company under the Woojin family site.
• WOOJIN JAPAN (우진재팬)minorOthersListed as a related/affiliated company under the Woojin family site. International subsidiary in Japan.
• (주)우진에프텍 (Woojin F-TEC)minorOthersListed as a related/affiliated company under the Woojin family site. Also handles Flow Calibration & Measurement System Q&A (contact: [email protected]).
• 정밀계측단지 (Instrument Park)minorOthersListed as a related company under the Woojin family site. An industrial complex/park focused on precision instrumentation.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Endress+Hauser: Swiss-based global leader in industrial process instrumentation — flow, level, temperature, pressure and analytics. Highly comparable to Woojin's flow metering, temperature sensors, and analytical instrumentation businesses, particularly in oil & gas, chemicals and power.
• Emerson Electric (Rosemount): Emerson's measurement and flow portfolio (Rosemount, Micro Motion) directly overlaps with Woojin's liquid/gas metering skids, Coriolis/DP flow systems and tank gauging. Competes head-to-head in custody transfer, refinery and petrochemical tenders.
• Yokogawa Electric: Japanese process automation and measurement company with strong nuclear, oil & gas and steel mill references. Comparable to Woojin in flow calibration, control systems and DCS-adjacent measurement, with similar nuclear-grade instrumentation heritage.
• KROHNE: German specialist in industrial process measurement — flowmeters, level meters, analyzers. Directly comparable to Woojin's flow calibration and metering skids for oil & gas, chemicals and water/wastewater applications.
• Brüel & Kjær (HBK): Specialist in sound and vibration measurement, condition monitoring and predictive maintenance. Highly comparable to Woojin's Condition Monitoring System (CMS), vibration sensors and portable diagnostic devices for rotating machinery.
• SKF (Condition Monitoring): Swedish bearings and rotating-equipment performance leader with a major condition monitoring business (vibration sensors, online systems). Directly comparable to Woojin's CMS portfolio targeting industrial predictive maintenance.

Broad incumbents

• ABB: Swiss-Swedish broad industrial automation incumbent offering measurement, analytics and process control across power, metals and O&G. Overlaps with Woojin's flow meters, analyzers (ABB/Siemens/Vympel are even integrated into Woojin's skids) and steel mill automation.
• Siemens: Global automation and digital industries incumbent with process instrumentation, gas analyzers and steel/metal industry solutions. Comparable in scope to Woojin's steel mill automation and integrated analyzer houses within metering skids.
• Honeywell: Broad industrial conglomerate with significant process measurement, gas analytics and nuclear-grade instrumentation offerings. Competes with Woojin in refinery/petrochemical metering and nuclear-related safety instrumentation.

Emerging players

• Azbil Corporation: Japanese building and industrial automation specialist with process instrumentation and advanced materials exposure. Comparable in Asia-heavy reference base and overlap in nuclear, steel and petrochemical instrumentation markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/woojin-inc-

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries6 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Woojin Inc