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INTRODUCTION

History

2025

12. The completion of the new extra-high voltage transformer facility is scheduled soon.
06. Registered on Korea’s national e-procurement system, KONEPS.
04. Started Full-Scale Production of Low-Voltage-to-Low-Voltage Transformers

03. Certified under ISO 45001:2018 and KS Q ISO 45001:2018 standards for occupational health and safety
03. Patent Granted for Molded Transformer Featuring Seismic Resistance and Explosion-Proof Design
01. Filed Two Patent Applications, Including One for Transformer Seismic Monitoring Technology

01. A new R&D and technology center is under development in Suwon.
       Production and sales of our system solution products have officially commenced.
       LITEWIZ and LITEWIZ PLUS are now officially registered trademarks, reinforcing our brand identity and market presence.

2024

12. Established DH Electric Co., Ltd. as an officially registered corporation.

11. We have been granted four patents in advanced transformer technologies, including:

       A diagnostic device and method for detecting internal faults in gas-insulated transformers

       A recovery system and method for three-phase transformers

       A remote operation and monitoring system for manual load tap ground transformers

       A control system and method for managing distribution transformers in low-voltage networks
10. Launched the first shipment of DH Electric’s molded transformers to market.

03. DH Electric trademark officially registered.

2019~2023

23.05. Expanded the plant dedicated to low-voltage coil manufacturing.

22.09. Awarded Job Creation Excellence Certification by the Korean Ministry of Justice.

21.07. Initiated manufacturing of axial-type coils, supporting capacities up to 20,000 kVA.

20.03. Completed KERI type testing and produced coils for KCC short-circuit testing.

19.11. Supplied custom-designed (ODM) products to HD Hyundai Electric

2018

10. Supplied ABB Korea with low-voltage coil products.

07. Obtained two patents related to low-voltage coil technology:

       A coreless winding device for low-voltage coils

       A manufacturing method for low-voltage coils using a coreless winding device

2017

10. Delivered custom-designed ODM solutions to Jeil Electric.
10. Delivered custom ODM solutions to CHERYONG ELECTRIC.

05. Received official certification as a venture enterprise

2016

06. Officially certified as a CLEAN workplace by KOSHA (Korea Occupational Safety and Health Agency)

01. DHIS joined the LSIS “ACE Club” and was awarded certification

2015

10. Commenced Full-Scale Production of Molded Transformers

06. Obtained Certification for the In-House Corporate Research Institute

05. Completed Construction and Relocated to the New DHIS Ochang Plant

03. Acquired ISO 9001:2015 and KS Q ISO 9001:2015 Certifications

03. Acquired ISO 14001:2015 and KS I ISO 14001:2015 Certifications

01. Established the DHIS Co., Ltd. Affiliated Research Institute

2012~2014

14.09. DHIS Co., Ltd. was established as an independent corporation.

14.01. Joined the LSIS “ACE Club” and received official certification.

13.01. Recognized by LSIS as a “Best Partner.”

12.12. Began production of molded transformer coils and cores.

2008

03. Road Traffic Systems – Manufacture of unmanned enforcement equipment and highway toll collection system devices

03. Began production of six types of track circuit equipment for high-speed rail systems

2004~2007

07.12. Began OEM production of Hi-Pass terminals

06.02. Certified as a Venture Business (DaeHan Industrial System)

05.04. Acquired ISO 9001 certification

04.02. Incorporated as DaeHan Industrial System Co., Ltd.

2002

10. Recognized by LSIS Co., Ltd. as a specialized supplier of system PCB assemblies and panel wiring.

1997

05. Became a registered partner company of LSIS Co., Ltd.

04. the company name was changed to “Daehan Electronics Industry.”

1988

08. Founded Wonjin Electronics

 

COMPANY  DHIS  | CEO  MIN JINGI  | BUSINESS REGISTRATION NUMBER  317-81-44152   Tel +82-43-716-2235,36 | Fax +82-43-716-2237   | E-mail dhis113@naver.com 

ADDRESS  752, Hwabok-ro, Ochang-eup, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do, 28108, South Korea

COPYRIGHT Ⓒ 2025 DHIS. ALL RIGHTS RESERVED.