THN Corporation

Company Profile



43, Seongseo-ro 71-gil, Dalseo-gu, Daegu, Korea

Business Overview

-Manufacturer of wire harnesses and junction boxes

-With technical collaboration with Furukawa Electric Co., Ltd. of Japan, the company has been manufacturing junction boxes since 1999.

-The Company supplies more than 90 percent of the products it manufactures to Hyundai Motor and Hyundai Mobis

-The Company, which had originally been called Tong Hae Electrics Industries, adopted the current corporate name on March 28, 2008.


(As of Dec. 31, 2022)

Major Shareholders Interest Ratio (%)
Lee Gwangyeon 20.9
Chae Chul 20.5


Low Voltage Connection
-AL Wires
-PK (Poly-Keton) Materials
-FFC (Flexible Flat Cable)
-Wire Compression
-Wire Harness

High Voltage Connection
-High Voltage Junction Block
-OBC (On-Board Changer)
-LDC (Low Voltage DC-DC Converter)
-High Voltage Wire Harness
-ICCB (In Cable Control Box)

Electronic Control Network
-VMS (Vehicle Data Monitoring System)
-Ethernet Gateway
-PSU (Power-net Safety Control Unit)
-EEM (Electrical Energy Management)
-12-48 Converter
-E-DPC (12-12 Converter)
-Integrated Controller (ICU)


Jul. 1986 Tong Hae Electrics Industries was established.
Oct. 1986 The Company started to manufacture wire harnesses
Oct. 1989 The Company established its R&D center.
Dec. 1994 The Company established Jungsung Mechatronics Co., Ltd. (currently called JSN Corporation) in Korea.
Sep. 1995 The Company's second wire harness facility was completed.
May 1996 The Company formed a technical alliance with the Furukawa Electric Co., Ltd.
Jul. 1996 The Company was listed on the Korea Stock Exchange.
Dec. 1999 The Company acquired QS9000 certification.
Jul. 2004 The Company established Qingdao Samseung Industrial Electrics Ltd. in China.
Dec. 2004 The Company acquired ISO/TS16949 certification.
Dec. 2004 The Company acquired ISO14001 certification.
Jul. 2005 The Company completed the construction of its Ulsan plant.
Jul. 2006 The Company established Qingdao D.H Cables Ltd. in China.
Apr. 2008 The Company adopted a new corporate name, THN Corporation.
Jan. 2010 The Company established THN Auto Parts Manufacturing Brasil S.A. in Brazil.
Oct. 2011 The Company acquired a 40.0 percent ownership in Weihai Rixon Electronic Assemble Co., Ltd. of China.
Jan. 2013 The Company established THN Paraguay S.A in Paraguay.
Nov. 2013 Obtained certification under the OHSAS18001 Standard.
Jul. 2014 The Company established THN Autoparts Philippines Inc. in the Philippines.
Dec. 2014 Established Haiyang Samhyeon Electrics Co., Ltd., the fourth plant in China.
Dec. 2015 Established Shandong Sanzhen Electrics Co., Ltd., the fifth plant in China.
Dec. 2020 The Company established THN Autoparts VietNam CO., Ltd.
Apr. 2022 Established plant 6 of Shan Dong San Xin Electronics Co., Ltd.

Supplemental Information 1