Wonjin Aluminium

What Wonjin Aluminium does

Wonjin Aluminium (주식회사 원진알미늄) is a South Korean aluminum extrusion and window/door system manufacturer headquartered in Wanju-gun, Jeollabuk-do. Founded in October 1987 by Won Jong-jin originally as Wonjin Industries producing color TV antenna profiles, the company has evolved over more than 36 years into a vertically integrated building envelope specialist, operating two factories (Factory 1/headquarters and the 2014-built Dream Center Factory 2) with extrusion capacity scaled from 400 tons in 1987 to 1,000 tons in 1998 and 1,800 tons in 2003, plus sales offices in Seoul and Seongnam. Its core products include a tiered platform of 55mm, 71mm, 115mm, 125mm, 220mm and 250mm aluminum system windows and doors (marketed under the VIEWIN brand launched in 2008), curtain wall systems for high-rise buildings, and complementary architectural components (handrails, bridge railings, elevator boxes, sign frames, interior moldings), underpinned by 22 patents, 5 design registrations, KS/ISO certifications, INNO-BIZ and Root Technology designations, and a KOLAS-accredited in-house testing laboratory.

The company also pursues adjacent advanced-materials R&D through its corporate research institute, including Al matrix composites (Al-C, Al-CF, Al-SiC) reinforced with carbon, ceramic and SiC particles for automotive lightweighting, heat sinks, and agricultural equipment, with patented vacuum hot-press manufacturing processes. Revenue mechanics are hardware-led (custom aluminum extrusion profiles, finished window/door and curtain wall systems) plus installation services, sold through a direct field-sales model with dedicated geographic account managers, project consultants embedded with architects/specifiers/contractors, and qualification for Korean Public Procurement Service tenders. Named customers are dominated by Korean central and local government projects (offices of education, health centers, post offices, multi-purpose gymnasiums, exhibition halls), with an additional export channel to North America and Japan that earned a 3 Million Dollar Export Tower Award in 2023.

The company is privately held under founding-family control, with Won Tae-yeon appointed Representative Director in February 2024, following the August 2022 reorganization from a limited liability company to a stock corporation and the June 2020 acquisition of Gyeonggi-do window fabricator Cha Bon for 42.6 billion KRW. The customer base is heavily skewed to Korean public-sector construction, with moderate diversification from architectural/specifier channels and nascent export revenue; growth has been milestone-paced rather than hyper-scaling, supported by sustained patent output and recurring green technology, HRD, and quality certifications.

Name

Wonjin Aluminium

Legal name

주식회사 원진알미늄

Website

https://won-jin.net

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

101–250 employees

Short description

Wonjin Aluminium is a South Korean, family-owned aluminum extrusion and system window/door manufacturer serving Korean public-sector construction, architects/specifiers, and export customers in North America and Japan with vertically integrated fabrication and installation.

Ownership category

akta.pro rank

Product category

Aluminium Building Systems

NAICS

Other Aluminum Rolling, Drawing, and Extruding (331318), Metal Window and Door Manufacturing (332321), Ornamental and Architectural Metal Products Manufacturing (33232), Fabricated Structural Metal Manufacturing (332312), Ornamental and Architectural Metal Work Manufacturing (332323)

SIC

Rolling Drawing & Extruding Of Nonferrous Metals (3350), Metal Doors, Sash, Frames, Moldings & Trim (3442), Prefabricated Metal Buildings & Components (3448), Sheet Metal Work (3444)

akta.pro primary industry

Aluminum Extrusion (IMAKACAG)

akta.pro secondary industries

Aluminum Value-Added Components (Automotive, Aerospace, Packaging, Building Systems) (IMAKACAM), Aluminum Fabrication & Finishing (Machining, Anodizing, Coating) (IMAKACAI), Architectural & Miscellaneous Metals (Stairs, Railings, Ladders) (IMADACAE), Metal Cladding, Soffits & Trim (Non-Panel Components) (IMADACAM)

Keywords

• Aluminium extrusion profiles
• Aluminium window systems
• Curtain wall systems
• System doors
• Aluminium building components

Headquarters

HQ city

Bondong

HQ country

South Korea

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Aluminium Extruded Profiles: Manufacture and sale of custom aluminium extrusion profiles for buildings, machines, and industrial applications. Production includes various sizes from curtain wall components to precision industrial profiles.
2. Window and Door Systems: Complete window and door systems including casement, sliding, tilt-turn, project windows, and system doors for residential, commercial, and institutional buildings
3. Curtain Wall and Facade: Curtain wall systems and facade products for high-rise buildings including design, fabrication and installation services
4. Construction Services: Installation and construction services for aluminium building components including guardrails, handrails, and sign frames

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

Wonjin Aluminium manufactures and supplies custom aluminium extrusion profiles and finished aluminium building envelope products, including the VIEWIN system window brand (casement, sliding, tilt-turn, project, and pull-down windows in 55mm–250mm profiles), curtain wall systems for high-rise buildings, 71mm system doors, and architectural aluminium components such as handrails, bridge railings, elevator boxes, and sign frames. The company delivers these through in-house design, extrusion, finishing, fabrication, and installation services targeted at construction firms, architects, contractors, and government/public sector projects.

Product overview

Wonjin Aluminium operates as a comprehensive aluminum building systems provider, offering both aluminum extrusion manufacturing capabilities and a full portfolio of finished window, door, and facade products. The core product line centers on aluminum windows and doors (including casement, sliding, tilt & turn, project, and pull-down types), curtain wall systems for high-rise buildings, and system doors. These are complemented by architectural aluminum components such as handrails, bridge railings, elevator boxes, sign frames, and interior moldings. The company produces custom extrusion profiles through its manufacturing facilities and conducts R&D on advanced aluminum matrix composite materials for specialized industrial applications. The product architecture follows a platform approach where multiple window series (55mm, 71mm, 115mm, 125mm, 220mm, 250mm) address different performance requirements and building applications, while the curtain wall system serves as the premium facade offering.

Differentiator

Problem solved

Functional benefit

Brands

• VIEWIN: System window brand launched in 2008 for aluminum windows and building systems

Products and services

• 71mm Casement Window

Named customers9 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Eleven partnerships are on record, tiered minor.

• 군산상업고등학교 (Gunsan Commercial High School)minorStrategic or Co-development Partner · 1 May 2022Industry-academia cooperation agreement for talent development and training
• 대원 (Daewon)minorStrategic or Co-development Partner · 1 June 2020Strategic business partnership agreement signed in 2020
• 차본 (Chabon)minorOthers · 1 June 2020Acquisition of Gyeonggi-do window company valued at 42.6 billion KRW
• 전북대학교 (Jeonbuk National University)minorStrategic or Co-development Partner · 1 June 2019Big Person Job Experience program and career support agreements with university career center
• 우석대학교LINC+사업단 (Woosuk University LINC+ Project)minorStrategic or Co-development Partner · 1 January 2019Social customized industry-academia cooperation leadership university cultivation project agreement
• 전주공업고등학교 (Jeonju Technical High School)minorStrategic or Co-development Partner · 1 May 2018Industry-academia cooperation agreement for vocational training
• 수원대학교 산학협력단 (Suwon University Industry-Academia Collaboration)minorStrategic or Co-development Partner · 1 June 2017Industry-academia partnership for research and development
• 전북대학교 산학협력단 (Jeonbuk National University Industry-Academia Collaboration)minorStrategic or Co-development Partner · 1 April 2017New renewable energy industry academia coupling project participant
• 호원대학교 (Howon University)minorStrategic or Co-development Partner · 1 April 2015Family company industry-academia cooperation agreement
• 삼례공업고등학교 (Samnye Technical High School)minorStrategic or Co-development Partner · 1 March 2014Industry-academia cooperation agreement
• 원광대학교 (Wonkwang University)minorStrategic or Co-development PartnerWK300 company selection and potential R&D collaboration (2021, 2024)

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Systena (Korea Systena): Korean manufacturer specializing in system windows and aluminum architectural products, directly competing with Wonjin's VIEWIN product line in residential and commercial window systems with thermal-break technology.
• Schüco: German global supplier of aluminum window, door, and facade systems including curtain walls. Comparable to Wonjin in high-rise curtain wall systems, thermal-insulated windows, and integrated building envelope solutions.
• Reynaers Aluminium: European leader in aluminum window, door, and curtain wall systems with strong thermal-break technology. Comparable to Wonjin in system-level architectural aluminum solutions for high-rise and energy-efficient buildings.
• Alumax: Korean aluminum extrusion and window system manufacturer directly competing with Wonjin in thermal-insulated aluminum windows, curtain walls, and architectural extrusions for commercial and residential construction.

Others

• POSCO (aluminum/building materials division): Korea's largest steelmaker with aluminum extrusion and building materials activities. Adjacent competitor and potential upstream supplier to Wonjin, with broader scale and integrated metal production capabilities.

Emerging players

• Aluk Group: European aluminum window and door systems manufacturer focusing on energy-efficient residential and commercial solutions. Comparable to Wonjin in thermal-break aluminum windows and system door offerings for the mid-market segment.

Broad incumbents

• LX Hausys (formerly LG Hausys): A major Korean building materials manufacturer offering aluminum windows, doors, interior surfaces, and integrated building envelope solutions. LX Hausys is a broad incumbent with significant scale advantages and overlaps with Wonjin in windows, curtain walls, and architectural aluminum components.
• KCC Corporation: Large Korean industrial materials and coatings company with aluminum building products exposure. Overlaps with Wonjin in architectural metal components and facade systems for commercial construction projects.
• Hanwha Vision (Hanwha Building Materials): Diversified Korean building materials manufacturer producing aluminum windows, curtain walls, and architectural systems. Operates as a broad incumbent with greater financial scale and broader product portfolio than Wonjin.
• YKK AP Korea: Subsidiary of Japanese global window and door giant YKK AP, serving Korean residential and commercial markets with high-performance aluminum window systems, directly competing with Wonjin's system window portfolio.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance18 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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 Wonjin Aluminium