T&G SEJUNG
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T&G SEJUNG

About T&G SEJUNG

Built on manufacturing discipline, engineering capability, and long-term trust.

Leadership Message

Engineering trust into every component.

T&G SEJUNG has grown from a specialist manufacturer of internal-combustion-engine and agricultural-machinery components into an integrated partner for precision machining, assembly, gas engines, and engine service.

We build long-term partnerships through disciplined manufacturing, consistent quality, and responsive execution—turning customer requirements into dependable products for global markets.

Precision ManufacturingMachining and assembly expertise
Engine SolutionsGas engines and lifecycle service
Global ResponseQuality-driven execution for international customers
View original company profile (Korean)Leadership Message
Management Philosophy

Adapt. Align. Earn trust.

We respond to change with speed, align people and processes around shared goals, and earn trust through safety, quality, environmental responsibility, and product reliability.

01

Adaptability

Challenge convention and create new value through continuous innovation.

02

Alignment

Build transparent, collaborative relationships across customers, employees, partners, and shareholders.

03

Trust

Make every decision with safety, quality, environment, and product reliability in mind.

ChangeContinuous ImprovementOperational Stability
View original company profile (Korean)Management Philosophy
Company Milestones

More than three decades of manufacturing progress.

1992

Founded

Established as T&G Yongjin, building a foundation in engine and machinery components.

1999

Strategic Supply

Signed a strategic supply agreement for soundproof power-generation applications.

2005–2006

Quality & R&D

Achieved ISO 9001 and ISO 14001, registered as a PSI Korea supplier, and established a corporate R&D center.

2012–2015

Engine Business Expansion

Launched the export entity, established PSI Korea engine service operations, achieved TS 16949, and began large-engine production.

2017–Present

Global Manufacturing

Expanded certifications, clean-site operations, production capability, and integrated engine support.

View original company profile (Korean)Company Milestones
Operating Workflow

A connected path from order to delivery.

01Order Review
02Production Planning
03Material Development
04Material Receipt
05Production
06Quality Inspection
07Shipment
08Customer Satisfaction
View original company profile (Korean)Operating Workflow
Organization

Integrated teams, one manufacturing objective.

Business Control & Planning

Integrated planning, finance, administration, and operational coordination.

Quality & R&D

Product development, process validation, quality assurance, and continuous improvement.

International OEM

Sales, sourcing, manufacturing, and delivery support for global customers.

Engine Business

On-site service, engine build support, testing, and technical response.

Domestic OEM

Mufflers, drivetrain components, and heavy-duty industrial products.

View original company profile (Korean)Organization
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