Engineering the Future of Battery Manufacturing
We develop and localize three core technologies — notching dies, torsional horns, and precision machining — and create next-generation li-ion manufacturing solutions through co-development with global cell makers.
Intellectual Property
34patents
All registered patents (2025 Business Report)
R&D Headcount Ratio
8%
11 R&D staff / 143 total (end of 2025)
R&D Investment Share
5.14%
Revenue basis, FY2025
Global Footprint
7countries
Korea HQ + Poland · USA (Ohio, Georgia, Tennessee) · China · Indonesia
Annual R&D Investment Share (Revenue Basis)
Accelerating market leadership through R&D talent hiring and expanded ordinary research expenditure. R&D share grew 3.9× over 3 years.
3-Year Growth
×3.9
2023 → 2025 (revenue basis)
1.32%
2023
4.16%
2024
5.14%
2025
Source: 2025 Business Report — R&D-to-revenue ratio (separate F/S, before government grants)
Three Core Technology Domains
In-house development and localization of core components for li-ion assembly processes. Mass-production verified across notching, torsional horn, and precision machining domains.
Torsional Horn Localization
First domestic localization of torsional tool horns for fusion welding of next-generation 46φ tabless cylindrical cells (4680·46120). Replaces core technology previously 100% imported, securing cost competitiveness.
Patents
3
Diameter Range
Ø3.5–100mm
Supplied To
LGES Ochang
Production Stage
MP 검증 완료
Notching Die
Press-type dies that punch tab shapes on cathode and anode sheets with 1μm-level precision control. Supplied to global cell makers via 3-in-1 Dry-Notching-Cut system.
Patents
8
Integrated System
3-in-1
Key Customers
HLI · HL-GA
Order Volume
USA ₩6.5B
Precision Machining Engineering
1μm (0.001mm) precision control based on 5-axis machining centers and MES system. In-house operation of 3D coordinate measuring machines and surface roughness testers ensures quality assurance.
Tolerance
0.001mm
Primary Machine
5-Axis
Adopted
2018~
MES System
In-house
Total 34 — All Registered
Proprietary IP across li-ion winding, notching, cutting, and mold technologies. Continuous co-research with customers drives product development.
Total Intellectual Property
36
Core technology IP including 8 notching die patents and 3 torsional horn patents. Source: 2025 Business Report — IP status
Distribution by Category
Notching Die
824%
Torsional Horn
39%
Winding · Cutting · Molds (Others)
2368%
Source: 2025 Business Report — based on 34 registered patents
Major Registered Patents
Winding Apparatus for Li-ion Electrode Sheets
Registered
Cutting Apparatus
Registered
Notching Apparatus for Electrode Film
Registered
Winding Apparatus
Registered
Extrusion Mold Die
Registered
Friction Shaft
Registered
Cutting Apparatus for Electrode Sheets
Registered
Notching Mold for Film Stamping
Registered
Source: 2025 Business Report — IP table (Republic of Korea registered patents)
46φ Tabless Torsional Horn Localization
Selected as SME Technology Innovation R&D National Project
Our fusion welding technology development project for 46-series cylindrical li-ion cell assembly was selected as a national R&D project under the SME Technology Innovation Development Program. The objective is to localize core technology previously 100% imported, securing price competitiveness.
Selection Date
2024.08
Localization Target
Ø2.5×L120
“The objective is to localize core technologies for li-ion assembly processes that are currently 100% dependent on overseas suppliers, thereby securing price competitiveness.”
— Company Brochure R5.5 p19 — Torsional tool horn localization R&D project overview
Global Co-Development Partnerships
Strategic partnerships with top-tier domestic battery manufacturers and global joint ventures simultaneously advance technology verification and mass-production supply.
Co-Development Partner
LG Energy Solution
Ochang plant CRW torsional horn re-grinding (48EA per line every 2 weeks) · US Arizona mass production scheduled end of 2026 · NFF winder parts under additional discussion
Co-Development Partner
HLI Green Power
Hyundai-LG Indonesia JV — notching die business (started Feb 2024)
Co-Development Partner
HL-GA Company
LGES-Hyundai US JV — notching dies & cutters awarded (Oct 2024)
Active Co-Development Pipeline
Customer requests for additional development to expand next-generation technology domains
Request for additional 130mm torsional horn development
Request for ultrasonic metered dispensing machine development
Request for ultrasonic roll welding machine development
3-Step Quality Control + In-House MES System
First Article Inspection → Self-Inspection → Final QA — a 3-stage protocol guarantees the quality of all products, while our in-house MES system enables real-time monitoring of production progress.
First Article Inspection (FAI)
Development Team + QA
Precision measurement and visual inspection of first articles after assembly to verify quality before mass production.
Self-Inspection
Process Operators
Process operators perform real-time inspections during and after work, blocking process defects upstream.
Final QA
Quality Assurance Team
After all processes complete, precision measurement and visual inspection of each part ensure final quality before shipment.
MES SYSTEM
In-House MES — Real-Time Production Monitoring
Our in-house Manufacturing Execution System monitors production progress in real time, ensuring 100% response to customer delivery requirements. (System established Aug 2018)
100%
On-Time Delivery Rate
R&D Technology Partnership Inquiry
We welcome inquiries about R&D collaboration including co-development with global cell makers, new component development, and technology verification.
Get in Touch