Founded in Kanagawa Prefecture, Japan, with Tokyo Electric Co., Ltd. (now Toshiba Corporation) as the parent company
Established: May 26, 1936
Start production and sales of bare copper wire
Start production and sales of power cables and communication cables
Start production and sales of rubber molded anti-vibration support stands
Listed on the Tokyo Stock Exchange
Enter construction industry (electrical construction)
Signed a technical assistance agreement with GE Company of the United States (reduction of shrinkable enamel wire, power cables)
Signed a technical assistance agreement with Barry Wright Company of the United States (horizontal adjustment type anti-vibration support device)
Signed a comprehensive technical assistance agreement with Barry Wright Company of the United States (vibration damping, buffering devices)
Engaged in technical cooperation, technology sales, and business agency with GE Company of the United States (oxygen-free copper rod continuous casting and rolling)
Completion of the first phase of Aichi Factory (start production of power cables)
Obtain ISO 9001 certification (entire company)
Obtain ISO 14001 certification (entire manufacturing plants)
Establish UNIMAC Corporation
Establish EXSYM Corporation
Implemented company split and reorganization, established a holding company system: renamed from Showa Electric Wire & Cable Co., Ltd. to Showa Electric Wire Holdings Co., Ltd.: changed the headquarters location to Minato-ku, Tokyo
Subsidiarized the Chinese joint venture Tianjin Showa Enamelled Wire Co., Ltd.: established a Chinese joint venture for power cable accessories: Tebian Electric Apparatus (Shandong) Cable Accessories Co., Ltd.
Subsidiarized the Chinese joint venture Tianjin Showa Enamelled Wire Co., Ltd.: established a Chinese joint venture for power cable accessories: Tebian Electric Apparatus (Shandong) Cable Accessories Co., Ltd.
Established a Chinese joint venture for oxygen-free copper business: Hangzhou Futong Showa Copper Industry Co., Ltd.
Engaged in business and capital cooperation with China Futong Group Co., Ltd.
Showa Electric Wire & Cable Systems Co., Ltd. mergers with EXSYM Corporation
Showa Electric Wire & Cable Systems Co., Ltd. merges with Showa Electric Accessories Technology Co., Ltd. and Showa Electric Industry Co., Ltd.: company headquarters relocated to Kawasaki City, Kanagawa Prefecture
Change from a company with a board of auditors to a company with an audit and supervisory committee: establish SFCC Corporation: company name changed from "UNIMAC Corporation" to "Showa Electric Wire UNIMAC Corporation"
Formulate the Showa Electric Wire Group medium-term business plan "Change & Growth SWCC 2026" and vision "SWCC VISION 2030"
Due to the reclassification of market segments by the Tokyo Stock Exchange, transferred from the First Section of the Tokyo Stock Exchange to the Prime Market
Due to the reclassification of market segments by the Tokyo Stock Exchange, transferred from the First Section of the Tokyo Stock Exchange to the Prime Market.
Showa Electric Wire Holdings Co., Ltd. renamed to SWCC Co., Ltd. (Chinese translation: "SWCC Co., Ltd.")
Acquire shares of TOTOKU Corporation to include it as a consolidated subsidiary
Formulate the SWCC Group medium-term business plan "Transformation for Growth SWCC 2030" and vision "SWCC VISION 2036"
SWCC Corporation announced that it will conduct awareness activities, including poster displays, wearing official badges, and statements on social media, during the Purple Ribbon campaign period from November 12 to 25, 2026, led by the Sustainability Promotion Department's Diversity Promotion Group.
Showcasing at the Highway Techno Fair 2026, held at Tokyo Big Sight on November 26-27, 2026, Showa Science Co., Ltd. of the SWCC Group will exhibit a "Vibration-Reduction Device for Surveillance Cameras" at the booth of the Metropolitan Expressway Company. The device utilizes existing lighting poles to improve video quality by reducing camera vibration and aims to lower equipment costs.
SDS, a company of the SWCC Group, has signed a Japan-wide agency agreement with BMC Co., a winding wire manufacturer in Thailand, to strengthen competitiveness in the general winding wire business. Starting in October 2026, it will begin exclusive sales of heat-resistant winding wire for motors and transformers. The aim is to strengthen the product lineup and enhance stable supply and quality assurance systems.
SWCC applied the 3D solution "ADitor™" at an ultra-high voltage power station of a domestic power company and confirmed its potential for improving operational efficiency. Without using specialized equipment, 3D data was obtained from footage captured by drones and other on-site equipment. They are working to solve on-site challenges related to skill transfer, efficiency, and safety.
At SWCC's substation of Tokyo Electric Power Grid, we created a 3D base model reproducing existing equipment using ADitor and designed routes for new cables. We applied the concept of PIM for the first time in actual construction planning, confirming its effectiveness toward construction planning that does not rely on drawings.
On October 16, 2026, SWCC Corporation participated in the 'Knowledge Exploration Course' at Kanagawa Prefectural Atsugi High School at the Sagamihara office, hosting 14 students and conducting lectures and experiments on superconductivity. The course was part of career education, with SWCCarat planning and operating it, marking the fourth consecutive year of participation.
SWCC Inc. received the Organizational Category award at the 2026 International Management Society's 2nd Research Conference. The award ceremony was held on October 4, 2026, at the Waseda University International Conference Hall, and the promotion of DE&I (Diversity, Equity, and Inclusion) was recognized. In April 2021, the company launched a Women Empowerment Project, and has been working to create an organization where all employees feel a sense of purpose and can maximize their abilities.
SWCC Inc. announced that it would donate a total of 5 million yen to the disaster area through the Japanese Red Cross Society, combining the company's relief fund with donations from group executives and employees, in commemoration of and support for those affected by the 2026 Kumamoto earthquake.
SWCC Corporation announced that it would donate a total of ¥5 million through the Japanese Red Cross Society to support people affected by the 2026 Kumamoto earthquake. The amount combines a company contribution with donations from group executives and employees. The company hopes for a swift recovery in affected areas and offers condolences to those who lost their lives.
SWCC Corporation and TOTOKU Inc. will exhibit together at the 1st International Thermal Energy Expo, held at Makuhari Messe from Wednesday, September 9, to Friday, September 11, 2026. Products on display will include RUOTA cooling cables, high-current water-cooled cables, and SICONEX, with the aim of expanding into the data center field. The exhibition runs September 9–11, from 10:00 to 17:00.