Company Profile

Company Profile

Company Name Diamond Electric Holdings Co., Ltd.
Founded October 1, 2018
Capital 2,024 million yen (As of March 31, 2026)
Headquarters Location 1-15-27, Tsukamoto, Yodogawa-ku, Osaka 532-0026, Japan
TEL: +81-6-6302-8211 FAX: +81-6-6302-8220
President and CEO YuuRi Ono
Employees (Consolidatied) 3,503 (As of March 31, 2026)
Business Description Business management of subsidiaries, etc., engaged in mobility equipment business, electronic control device business and all incidental related businesses, also other operations incidental or related business thereto.
Major Customers
Mobility Equipment Business
Ford Motor Company,Suzuki Motor Corporation,Daihatsu Motor Co., Ltd.,General Motors Company,SUBARU CORPORATION,Toyota Motor Corporation,Stellantis N.V.,Kia Corporation,Mitsubishi Motors Corporation,Honda Motor Co., Ltd.,BRP-Rotax GmbH & Co. KG,Renault S.A.,Niterra Co., Ltd.,Hyundai Motor Company, BYD Company Limited
Energy Solutions Business
Ichijo Co., Ltd. (Ichijo Komuten),YUASA CO.,LTD.,Choshu Industry Co., Ltd.,Toyota Housing Corporation,Panasonic Homes Co., Ltd.,SMB Kenzai Co., Ltd.,TAKEDEN Corporation,Newest Corporation,Chofukosan Co., Ltd.
Home Electronics Business
Daikin Industries, Ltd.,Corona Corporation,Mitsubishi Electric Corporation,MAX Co., Ltd., Panasonic Holdings Corporation,Mitsubishi Heavy Industries, Ltd.,Carrier Japan Corporation,Canon Inc.
Member of the Board of Directors / Audit & Supervisory Committee Members President and CEO YuuRi Ono
President's Office
External Director Takashi Yoshida
Director and Senior Advisor
DAITO PRESS Mfg. Co., Ltd.
External Director Gaku Okamoto
Lawyer
Okamoto & Toyonaga Law Office
Director
Chief of President's Office Diamond & Zebra Electric Mfg. Co., Ltd.
Vice Chairman and Assistant Site CEO of Diamond Electric Mfg. (Suzhou) Co., Ltd.
Vice Chairman and Assistant Site CEO of Diamond Electric International Trading (Suzhou) Co., Ltd.
Vice Chairman and Assistant Site CEO of Diamond & Zebra Electric (Shanghai) Co.,Ltd.		 Minayo Okamoto
External Director, Audit and Supervisory Committee Member Shiro Kasama
External Director, Audit and Supervisory Committee Member Hideki Okushita
Director, Audit and Supervisory Committee Member Masataka Irie
Group Business Execution Structure President and CEO YuuRi Ono
Principal Fellow (Senior Executive Officer level), CTO Shintaro Mori
Senior Executive Officer, CFO Eishin Tokuhara
Executive Officer, CGO Saburo Ashitani
Executive Officer, CQO and Chief General Manager of Quality Assurance Division Kenichiro Abe
Executive Officer in charge of All Diamonds Economic Zone Creation and Procurement Centralization
Chief General Manager of Procurement Division, Diamond & Zebra Electric Mfg.Co., Ltd.		 Shin Endou
Executive Officer, Head of Customer Interface Creation Office, Chief General Manager of Mobility Equipment Division Koji Morishita
Executive Officer, Chief General Manager of Energy Solutions Division Yasuo Miyagi
Executive Officer
Chief General Manager of Monozukuri Division, Diamond & Zebra Electric Mfg. Co., Ltd.
Operation Site Co-COO of Diamond Electric Mfg. Corporation		 Yutaka Sakane
Executive Officer in charge of Group Base Management Planning & Promotion
Chief General Manager of DZ Administration Division, Diamond & Zebra Electric Mfg.Co., Ltd.
Representative Director of Zebra Denshi Co.,Ltd.		 Yoichi Uno
Technical Development Structure Senior Chief Engineer and Chief General Manager of Ignition Combustion Technology Division Keiichi Yamaguchi
Senior Chief Engineer, Chief General Manager of Home Electronics Technology Division Keiichi Higashitani
Chief Engineer, Group Factory Manager Hirokazu Uejima
Senior Chief Engineer and Deputy Chief General Manager of Ignition Combustion Technology Division Koji Fujii
Chief Engineer and Deputy Chief General Manager of Quality Assurance Division Masakazu Yoshikawa

Business Structure Customer Interface Creation

Diamond Electric Holdings, Diamond & Zebra Electric Manufacturing, Diamond Denshi Manufacturing, Diamond Electric, Zebra Denshi, Diamond Craft, Diamond Electric Manufacturing and overseas group companies shall strive as "One Team" that transcends all of these frameworks to "Contribute to the Improvement of Our Global Environment by Connecting Cars and Homes with Manufacturing".

List of Group Companies

Diamond & Zebra Electric Mfg. Co., Ltd.

Founded October 1, 2021
Address 1-15-27, Tsukamoto, Yodogawa-ku, Osaka 532-0026, Japan
TEL: +81-6-6195-5230 FAX: +81-6-6195-5260
Board of Directors and Executive Officers President and CEO YuuRi Ono

Diamond Denshi Mfg. Co., Ltd.

Founded September 1984
Address 65-4 kounosu, Yoshida, Tsubame, Niigata 959-0261, Japan
TEL: +81-256-92-5101 FAX: +81-256-92-7657
Board of Directors and Executive Officers Representative Director and Chairman of the Board Saburou Ashitani
Representative Director, Operation Site COO Yoshikane Nomoto

Diamond Electric Mfg. Co., Ltd.

Founded June 1940
Address 18 Nanei-cho, Tottori 689-1192, Japan
TEL: +81-857-53-1121 FAX: +81-857-53-1104
Board of Directors and Executive Officers President and CEO YuuRi Ono
Representative Director, Operation Site COO Kotani Kaoru

Zebra Denshi Co., Ltd.

Founded December 1967
Address 1-1475 Wakakusa, Otawara, Tochigi, 324-0021, Japan
TEL: +81-287-22-3885 FAX: +81-287-23-6090
Board of Directors and Executive Officers President and CEO YuuRi Ono
Representative Director Yoichi Uno
Operation Site COO Nagae Keisuke

Diamond Craft Co., Ltd.

Founded July 1990
Address 75-1 Omonogawamachi Nankata Ezozuka, Yokote-City, Akita 013-0213, Japan
TEL: +81-182-22-5633 FAX: +81-182-56-2056
Board of Directors and Executive Officers
President and CEO YuuRi Ono
Representative Director, Operation Site COO Hideo Tezuka

Diamond Electric Mfg. Corporation

Founded December 1987
Address Eleanor Industrial Parkway, State Route 62, Eleanor, WV, 25070, U.S.A.
TEL: +1-304-586-0070 FAX: +1-304-586-0075
Board of Directors and Executive Officers Director, Operation Site COO Lloyd Ayers
Operation Site Co-COO Sakane Yutaka

Diamond Electric Hungary Kft.

Founded September 2000
Address 2500 Esztergom Rubik Erno Utca 1. Hungary
TEL: +36-33-542-200 FAX: +36-33-542-201
Board of Directors and Executive Officers Representative Director, Operation Site COO Shun Terasaka

Thai Diamond & Zebra Electric Co., Ltd.

Founded December 1987
Address 88 Moo 5 Debaratna Road, Tambol Bangsamuk, Amphur Bangpakong, Chachoengsao 24130 Thailand
TEL: +66-38-538-982 FAX: +66-38-538-987
Board of Directors and Executive Officers Director, Operation Site COO Satoshi Miyawaki

Diamond Electric Asia Pacific Co., Ltd.

Founded December 2014
Address 781 Moo 9,Gateway City Industrial Estate Soi 10,Tambol Huasamrong, Amphur Plaengyao, Chachoengsao,24190 Thailand
TEL: +66-38-086-716
Board of Directors and Executive Officers Representative Director, Operation Site COO Satoshi Miyawaki

DE Diamond Craft (Thailand) Co., Ltd.

Founded August 2013
Address 122/20 Moo 6, Tambon BangPhriang, Amphoe Bang Bo, Samut Prakarn, 10560 Thailand
TEL: +66 (0)2-170-8282 FAX: +66 (0)2-170-9868
Board of Directors and Executive Officers Managing Director, Operation Site COO Ryuichi Ono

Diamond & Zebra Electric (Shanghai) Co., Ltd.

Founded April 1995
Address Room 202 Building B,No.898 Jiujing Town Songjiang District Shanghai,China
TEL: +86-21-576-36475 FAX: +86-21-576-36852
Board of Directors and Executive Officers Representative Director Masakazu Yoshikawa
Director, Operation Site COO Yuji Tategaki

Diamond Electric Mfg. (Suzhou) Co., Ltd.

Founded May 2004
Address No.145 YangPu Road, Suzhou Industrial Park 215126 Jiangsu P.R.China
TEL: +86-512-6283-6908 FAX: +86-512-6283-6447
Board of Directors and Executive Officers Representative Director Masakazu Yoshikawa
Director, Operation Site COO Yukinori Tanio

Diamond Electric International Trading (Suzhou) Co., Ltd.

Founded November 2010
Address No.145 YangPu Road, Suzhou Industrial Park 215126 Jiangsu P.R.China
TEL: +86-512-6818-5150
Board of Directors and Executive Officers Representative Director Masakazu Yoshikawa
Director, Operation Site COO Yuji Tategaki

DE Diamond Electric India Pvt. Ltd.

Founded June 2007
Address Plot No.38, Sector-5, HSIIDC Growth Centre, Phase-II Bawal Distt.Rewari, Haryana India
TEL: +91-9053-029816
Board of Directors and Executive Officers Representative Director, Operation Site COO Toyoda Yuuichi

DE Diamond Craft Mold India Pvt. Ltd.

Founded December 2008
Address Plot No.116A, 2nd Main Road, Sidco Industrial Estate, Thirumazhisai, Chennai-600124, Tamil Nadu, India
TEL: +91-44-2999-3712
Board of Directors and Executive Officers Operation Site COO C.Manivannan

Vietnam Diamond & Zebra Electric Co., Ltd.

Founded September 2007
Address Lot I.3, Dai Dong-Hoan Son industrial park, Dai Dong commune, Bac Ninh province.
TEL: +84-222-384-7435 FAX: +84-222-384-7437
Board of Directors and Executive Officers Managing Director, Operation Site COO Ryuuji Mihashi

Diamond Electric Korea Co., Ltd.

Founded February 2012
Address Hanshin Intervalley West 1212 Yeoksam-Dong , 322, Teheran-Ro, Gangnam-Gu, Seoul, 06211 Korea
TEL: +82-2-2183-1831
Board of Directors and Executive Officers Representative Director, Operation Site COO Jung Jaehun

PT. Diamond Electric Indonesia / PT. Diamond Electric MFG Indonesia

Founded July 2013
Address BM Rental Factory, Unit A-2. Jalan Madural Blok L-9. Kawasan Industri MM2100 Ds. Cikedokan, Kec. Cikarang Barat, Kab Bekasi 17530
TEL: +62-21-2214-3052 FAX: +62-21-2214-3772
Board of Directors and Executive Officers Director, Operation Site COO Takashi Nakashima

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