Contact

We respond promptly to defense partnership, commercial solution, and technical meeting inquiries.

COMPANY INFORMATION

Company Information

Company Name
J-Company Co., Ltd. 주식회사 제이컴퍼니
Founded
July 2018
CEO
Sung-Uk Jang (장 성 욱)
Business Areas
Semiconductor · RF · Defense · Digital Signal Processing — Engineering
Address
509 Sinil IT Yuto Knowledge Industrial Center, 13 LS-ro, Gunpo-si, Gyeonggi-do 15807, Republic of Korea
Inquiry Channel
Please contact our CEO email sujang@j-com.co.kr directly.
Website
CONTACT CHANNELS

Inquiry Channels

Tag the email subject so we can route it to the appropriate desk.

Defense Partnership

Defense software, RF design, prototype development, and mass-production collaboration proposals.

Tag email subject with [Defense]

Commercial Solutions

Tunnel emergency broadcasting, EV chargers, industrial RF solution adoption, and technical collaboration.

Tag email subject with [Commercial]

General Inquiry

Hiring, collaboration proposals, and any other inquiries.

Tag email subject with [General]
DIRECT MAIL

Email the CEO directly

All defense, commercial, and technical-meeting inquiries are routed through the CEO email.

CONTACT
sujang@j-com.co.kr

Please prefix the subject with one of [Defense] · [Commercial] · [General]
so we can route your inquiry quickly.

Compose direct email
LOCATION

Visit Us

HEAD OFFICE

J-Company Headquarters

Road Address
509 Sinil IT Yuto Knowledge Industrial Center,
13 LS-ro, Gunpo-si, Gyeonggi-do 15807
Visit Notes
Please coordinate visits in advance.
Schedule by direct email.
Office Hours
Weekdays 09:00 – 18:00 (closed weekends and public holidays)