Thirty years, one path.
Since 1994, Wonjin has focused on one field — automotive plastic injection molding. Meet the technology, people, and philosophy behind three decades of work.
AT A GLANCE
Founded 1994 · Automotive plastic injection molding
From mold design to mass production and quality control — executed in-house as a Tier-1 supplier to Kia.
— 01
FOUNDED
1994
— 02
CEO
Lee Seon-heon
— 03
HQ
Hwaseong, KR
— 04
KEY CLIENT
KIA · HYUNDAI
FIG · 01
18ha
Site area
18ha · Hwaseong
FIG · 02
48M
Annual output
~48M units (2024)
FIG · 03
3+
Certifications
IATF 16949 · ISO 9001 · ISO 14001
CEO's MESSAGE
“Three decades of engineering, powering tomorrow's mobility.”
Wonjin is a plastic injection-molding specialist that has walked a single path since 1994. Growing alongside Korea's automotive leaders — Kia foremost among them — we have supplied trusted parts from exterior trim to functional modules.
The industry is now at an inflection point of electrification and light-weighting. Wonjin is investing in EV-specific high-stiffness components, expanded use of recycled resins, and low-carbon process conversion. Depth of technology and consistency of quality cannot be built without a generation of investment.
We will continue to stay true to the fundamentals and deliver quality one step ahead of customer expectations. Thank you for your continued trust.
Lee Seon-heon
Chief Executive Officer
VISION & PHILOSOPHY
What Wonjin stands for
Technology builds trust, and trust moves the industry.
— MISSION
Raise the safety and quality of mobility through precision parts
A vehicle is the product closest to human life. We believe that quality at the millimeter level determines the overall safety and feel of a car.
— VISION 2030
Asia's leading automotive plastics partner
By 2030, we target 40% revenue share from EV parts and over 50% of production lines using recycled resin.
— PHILOSOPHY
01
Fundamentals
Prioritize basics over flash — design, mold, molding, inspection, all at one standard.
02
Accumulation
A generation of accumulated data and know-how is our edge.
03
Partnership
Customers are partners and teachers; we propose before we're asked.
HISTORY
A generation of progress
Key milestones since Wonjin was founded in 1994.
2020s
Electrification & sustainability
2025.03
EV battery housing mass production begins (WJ-FN-18)
2024.11
Recycled PP line — 12% of production converted
2023.06
Hwaseong Plant 2 smart-factory conversion complete
2022.01
IATF 16949:2016 re-certification
2021.04
Supply contract — Kia EV6 interior parts
2010s
Expansion & global
2018.09
Annual revenue exceeds KRW 120 billion
2015.07
Hanoi, Vietnam technical liaison office opens
2013.03
Hwaseong Plant 2 — 18 ha total site area
2011.05
Exclusive exterior supplier for Kia K-series
2000s
Internalizing expertise
2009.11
In-house mold design team established
2005.02
ISO/TS 16949 certification
2001.08
Hwaseong headquarters completed — current address
1990s
Founding & foundation
1998.04
ISO 9001 quality management system
1996.10
Kia Motors Tier-1 supplier registration
1994.07
Wonjin founded — CEO Lee Seon-heon
BRAND GUIDE
Brand identity
Basic usage guide for the Wonjin logo and brand color. The logo must be used with clear-space protected.
— LOGOTYPE
Signature logotype
The WONJIN wordmark set inside an elliptical shield — the shield expresses trust and rigidity; the type, linear precision.
PRIMARY
#1A3AA8
PMS 286 C
INK
#0B0E17
COOL BLACK
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