Est. 2010 · Sunguvarchatram, Tamil Nadu, India
YJ Polytec Pvt Ltd

Injection Moulding
& Wire Harness
Experts

Korea-founded precision manufacturer supplying injection moulded plastic parts and wire harness assemblies to automobile and Samsung Electronics OEM and automobile OEMs across India — IATF 16949:2016 certified since 2010.

Our Capabilities Contact Us
Injection Moulding
Wire Harness
🇰🇷 Korean Management
IATF 16949
8 Integrated Divisions · One Standard
Our Capabilities

Eight Divisions
Under One
Roof

Injection moulding, wire harness, hot plate & vibration welding, air cleaner assembly, CNC bending, pleating & paper cutting and an in-house tool room — end-to-end precision manufacturing for automobile and electronics OEMs.

All Capabilities Get a Quote
Injection Moulding
Wire Harness
Welding & Assembly
Tool Room & QC
Infrastructure & Quality
Built for Precision

In-House Tool Room
& Central
Monitoring

An in-house tool room, central monitoring room for real-time factory management, precision measurement lab, 100% leak testing and UPS backup across both plants — the infrastructure behind zero-defect quality.

Our Quality Contact Us
In-House Tool Room
Central Monitoring
Precision Measurement
UPS Backup
Our People · 410 Employees
The YJ Polytec Team

410 People
One Team,
One Standard

The specialists behind our injection moulding and wire harness lines — driven by customer satisfaction and a quality-first culture. IATF 16949:2016 & Hyundai SQ Mark certified.

About Us Careers
410 Employees
Injection Moulding
Wire Harness
Customer-First
15+
Years of Operation
410
Total Employees
31
Injection Machines
₹225Cr
Annual Revenue 2025
IATF
& ISO Certified
YJ Polytec control & monitoring zone, Sunguvarchatram
₹225Cr
Revenue 2025
Company Overview

Korea-Founded.
India-Based.
Globally Certified.

YJ Polytec Pvt Ltd is a Korean-managed precision manufacturing company in Sunguvarchatram, Kanchipuram — the heart of South India's automobile and electronics corridor. Eight divisions, one standard: zero-defect quality for every OEM we serve.

18,000 m² Land · 9,600 m² Plant

Dedicated injection moulding plant + Wire Harness plant (est. 2023) at Sunguvarchatram

410 Employees · Korean Management

Staff: 76 · Operators: 334 · President: Mr. Kim Jung Ki · Plant Director: Mr. Ahn Dar Su

7+ OEM Awards Since 2016

Best Quality, Best Productivity, Best Performance & Best Supplier awards from multiple OEM customers

Message from Leadership
Mr. Kim Jung Ki
President, YJ Polytec Pvt Ltd
"Due to the unwavering support and encouragement of our customers across diverse industries including home appliances, automotive, and electronics, our company has made significant progress over the past 15 years."

To meet market demands, expand our business, and thrive in a competitive industry, we continuously focus on innovation within our areas of expertise — consistently delivering high-quality output to our valued customers.

Our dedicated and highly skilled employees are the driving force behind all our endeavors. At YJ Polytec, we uphold the highest industry standards to consistently exceed our customers' expectations.

Mr. Kim Jung Ki President · YJ Polytec Pvt Ltd · Sunguvarchatram, India
Mr. Kim Jung Ki — President, YJ Polytec Pvt Ltd
Division 01

Injection Moulding

Precision-engineered plastic components for automotive and Samsung Electronics OEM — duct assemblies, sun visors, interior parts, refrigerator and home-appliance parts — backed by moulding, welding, leak-testing and quality control.

31 Machines120T – 1300TElectronics & AutoHot Plate WeldingIn-House Tool Room
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Division 02

Wire Harness

Reliable, high-performance wiring harness solutions for the automotive industry — complex assemblies for Hyundai, Kia and next-generation EV platforms, IATF 16949 certified and Hyundai SQ Mark approved.

Auto Crimping LinesHyundai SQ MarkEV Harness
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Division 03

Hot Plate Welding

Advanced hot plate welding for robust, leak-proof plastic assemblies — controlled heat and pressure for our duct sub-assemblies, with every batch air-pressure leak-tested.

3 Welding LinesCover & Duct6 Leak-Test Lines
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Division 04

Vibration Welding

Vibration welding for robust, leak-proof plastic assemblies — frictional heat at the joint for superior strength and durability, ideal for inlet and adaptor assemblies.

1 Vibration LineInlet & AdaptorFriction WeldAir-Pressure Tested
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Division 05

Air Cleaner Assembly

Complete automotive air cleaner units — from precision-moulded housings to fully assembled air-intake systems with filter and seal assembly, ready for vehicle installation.

Air Filter Units2 Assembly LinesMould + AssemblyDuct & IntakeTier-1 Supply
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Division 06

CNC Bending Process

Advanced CNC bending technology producing precision-formed metal components with exceptional accuracy — complex geometries and tight tolerances for automotive applications.

CNC AutomatedTight TolerancesComplex GeometriesMetal FormingAutomotive Grade
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Division 07

Pleating & Paper Cutting

Advanced paper cutting and pleating technology for high-performance filter elements — precise dimensions and uniform pleat geometry that maximise filtration area and airflow.

Filter ElementsUniform PleatsHigh Filtration AreaPrecise CuttingAutomotive & Industrial
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Division 08

Tool Room

An in-house tool room for mould fabrication, repair and scheduled maintenance — keeping tooling, quality and lead times firmly under our own control across the injection floor.

Mould FabricationMould MaintenanceIn-HouseQuality ControlFast Turnaround
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What We Make

Our Capabilities

View All
Injection moulded electronics plastic parts — refrigerator, washing machine, AC
01 · Injection · Electronics

Electronics Plastic Parts

Refrigerators, washing machines, AC units & visual display components — injection-moulded to exact OEM specifications.

View Details
Injection moulded automobile plastic parts — duct assembly, air filter, sun visor
02 · Injection · Automobile

Automobile Plastic Parts

Duct assemblies, air filters, sun visors, speaker frames, canister cases — for HMI & Kia Tier-1 automobile suppliers.

View Details
Automotive wire harness — steering wheel, console, sunroof, wheel speed sensor
03 · Wire Harness · Auto

Automotive Wire Harness

Steering wheel, console, sunroof & wheel speed sensor harness for Hyundai/Kia Tier-1 supply chain.

View Details
Electronics and EV wire harness — compressor, PTC heater, air purifier
04 · Wire Harness · EV

Electronics & EV Harness

Compressor-refrigerator harness, EV PTC heater harness & air purifier harness for electronics and EV supply chains.

View Details
Hot plate welding and secondary operations
05 · Secondary Operations

Hot Plate & Vibration Welding

3 welding + 2 assembly + 1 vibration welding + 6 leak test lines — complete secondary processing in-house.

View Details
In-house tool room and quality control
06 · Tool Room & QC

Tool Room & Quality Control

In-house mould fabrication, central monitoring room, ERP material management & UPS backup across both plants.

View Details
By The Numbers

15 Years of Delivering
Precision Quality

From a single factory in 2010 to 31 injection machines and a full Wire Harness division today.

Factory Area
18,000 m² Land · 9,600 m² Plant
Location Advantage
10 min to Samsung · 30 min to Hyundai, Irungattukottai
Management
Korean-managed · President: Mr. Kim Jung Ki
15+
Years Active
31
Injection Machines
410
Employees
₹225Cr
Revenue 2025
7+
OEM Awards
Our Journey

15 Years of Growth
& Milestones

From rubber & nylon parts in 2010 to a full-scale injection moulding + wire harness company serving India's top automobile and electronics OEMs.

Full Journey
2010

YJ Polytec Founded

Incorporation & mass production started for rubber & nylon parts. ISO/TS 16949:2009 certified from TUV.

2011

Hyundai SQ Mark

Achieved SQ Mark Certification from Hyundai Motor India — a landmark quality milestone.

2012

ISO 14001 & ISO 18001

Environmental and Occupational Health & Safety management systems certified.

2014

New Auto Customers

M/S Yong San (Aug) and M/S DAS (Sep) added as key automobile customers.

2015

Samsung Electronics OEM

Mass production started for Samsung Electronics OEM — refrigerators, washing machines, AC & display parts.

2016–19

Best Vendor Awards

"Best Improvement" (2016), "Best Supporting" (2017), "Best Productivity & Quality Vendor" (2018). A Grade Vendor (2024).

2020

New Factory Ownership

YJ owns its new factory. "Best Supplier Award Automotive 2020" & "Best Performance Award".

2021

INZI Controls

INZI Controls India onboarded (Sep). "Best Performance Award 2021".

2023

Wire Harness Plant

New Wire Harness manufacturing plant established. Mass production started for Motrex (KIA project).

2024

IATF 16949:2016 WH

Wire Harness IATF certified from TUV. Hyundai SQ Mark for WH. New customers: Inalfa, HL Klemove, Seco Komos, Woory Auto.

2025

₹225 Cr Revenue

Annual sales of ₹225 Crore (360억원). "Best Vendor DAS 2024" & "Best Practices Award 2024".

2026

New WH Plant Expansion

Proposed additional 1,800 m² Wire Harness plant. Construction start Apr 2026, SOP Nov 2026.

Our Valued Customers

Trusted by Industry Leaders

Serving leading electronics OEMs and HMI & Kia Tier-1 automobile suppliers across India's manufacturing belt.

All Customers
Samsung India logo
Samsung India Electronics
Refrigerator · Washing Machine · AC · Display Parts
INZI Controls India logo
INZI Controls India Automobile
Duct Assy Extension · Air Filter · Windshield Washer
DAS Automotive Seat India logo
DAS Automotive Seat India Automobile
Retainer · Lever Lock
KOC Sound System India logo
KOC Sound System India Automobile
Speaker Frame
Yong-San Automotive India logo
Yong-San Automotive India Automobile
Sun Visor
DAECHANG Seat Co., Ltd logo
DAECHANG Seat Co., Ltd Automobile
Suspension Spring
Seco Komos logo
Seco Komos Automobile
Automotive Components
Inalfa logo
Inalfa Automobile
Automotive Components
Motrex logo
Motrex Automobile
Automotive Components
Samsung India logo
Samsung India Electronics
Compressor – Refrigerator Wire Harness
Seco Komos logo
Seco Komos Automobile
Hyundai SU2I EV / KIA AY – EV & ICE Project Harness
Inalfa logo
Inalfa Automobile
KIA AY / HMI PS7I – Electric Sunroof Harness
HL Klemove logo
HL Klemove Automobile
Hyundai AI3 SUV – Wheel Speed Sensor Harness
Motrex logo
Motrex Automobile
KIA Project – Automotive Harness Assembly
KOC Sound System India logo
KOC Sound System India Automobile
Cord Wire Assembly
Woory Automotive logo
Woory Automotive EV · Automobile
PTC Heater Harness (EV Vehicles)
CEV Engineering logo
CEV Engineering Automobile
Wire Harness Assembly
Quality & safety standards at YJ Polytec
IATF
16949:2016
SQ ✓
Hyundai Motor
ISO
14001:2015
ISO
45001:2018
Certifications & Standards

Quality is
Non-Negotiable

Every part leaving our plant passes rigorous inspection against OEM standards — backed by internationally recognised certifications.

IATF 16949:2016

Automotive quality certified by TUV for both Injection Moulding and Wire Harness divisions.

Hyundai SQ Mark

SQ Mark from Hyundai Motor India for consistent zero-defect delivery across all divisions.

ISO 14001:2015

Environmental Management — sustainable manufacturing across all production units.

ISO 45001:2018

Occupational Health & Safety — safe working conditions for all 410 employees.

2016–18 Best Improvement / Supporting / Quality / Productivity Vendor
2020–21 Best Supplier Award Automotive & Best Performance Award
2024 Best Vendor DAS 2024 & Best Practices Award 2024
2024 SQ Mark for Wire Harness Division from Hyundai Motor India
View Certifications
Get in Touch

Let's Work Together

Looking for a trusted injection moulding or wire harness manufacturer near Sunguvarchatram? We respond within 24 hours.

Address

SNO. 42/1, Sogandi Village, Madhuramangalam Road, Sunguvarchatram, Sriperumbudur Taluk, Kanchipuram – 602 106, Tamil Nadu, India

Contact

Mr. Godwin — General Manager

Website

www.yjpoly.com

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