01
In-house process quality
Process and finished-product monitoring systems, with PFMEA-driven preemptive prevention per program.
Quality & R&D
A collaborative, certified quality assurance system — monitored from raw material to the customer's line.
MJ Tech earned IATF 16949 certification in 2023 — the global quality management standard for automotive production — and operates a collaborative integrated QMS with each customer, including customer quality certifications.

We achieve customer quality satisfaction by pursuing zero defects through continuous Plan–Do–Check–Act activities across every process.
Plan
Quality plans for in-house processes, customer incoming inspection, and market claim analysis.
Do
Quality activities across processes, customer receipts, and claims — with internal audits and certifications.
Check
Regular inspection of quality processes and systems, verified improvements — reviewed directly by the CEO.
Act
Continuous PFMEA, master list of past issues, design enhancement requests, and QMS operation.
01
Process and finished-product monitoring systems, with PFMEA-driven preemptive prevention per program.
02
Quality monitoring and immediate response for every delivery; recurrence prevention from listed past issues.
03
Regular joint analysis of claims with customers; DFMEA implementation and design enhancement requests.
04
A collaborative integrated QMS with customers, plus customer and international certifications.
042027 roadmap
A dedicated quality testing laboratory is planned on our campus for 2027 — ensuring initial and ongoing reliability of production parts to customer test specifications and component regulations.

Heat, cold, light, and moisture resistance

Flammability to automotive standards

Tensile and destructive testing

XRF analysis for regulatory compliance
An in-house development organization for molds, equipment, and parts is planned for 2027 — expanding from self-developed jigs and checkers to new materials and methods, following customer development procedures and MS/ES specifications, in collaboration with regional universities and research institutes.
Self-development of equipment, molds, jigs, and checkers
Development of new materials and production methods
06The future of MJ Group
MJ Group aims to grow into a mid-sized company with its own technology and quality systems — diversifying customers, securing proprietary products, and building a full R&D and quality assurance ecosystem within the decade.
01
R&D and quality organization structure
02
Test evaluation and production technology
03
Discovery and research of new materials
04
Serving global automakers and new tier-1 partners