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Showa Corporation was a globally recognized Japanese manufacturer specializing in high-performance shock absorbers, suspension systems, steering systems, and other critical components for automobiles, motorcycles, and power products. Founded in 1938, Showa built a strong reputation for quality and innovation, supplying major Original Equipment Manufacturers (OEMs) worldwide. In January 2021, Showa Corporation merged with Keihin Corporation, Nissin Kogyo Co., Ltd., and Hitachi Automotive Systems, Ltd. to form Hitachi Astemo, Ltd. This integration aimed to create a new global mega-supplier in the automotive and motorcycle industry, combining the strengths of each company in powertrain, chassis, and safety systems. While the Showa brand and its technologies continue within Hitachi Astemo, Showa Corporation as an independent entity ceased operations upon this merger. Its legacy in advanced component manufacturing continues to influence the industry.
Served as the central hub for Showa's global operations, including corporate management, research and development, strategic planning, and oversight of its automotive and motorcycle components business.
The Gyoda facility was known for its advanced manufacturing capabilities and R&D centers focused on suspension, steering, and hydraulic technologies. It often included proving grounds and testing facilities.
As a prominent Japanese manufacturing company, Showa's culture likely emphasized 'Monozukuri' (craftsmanship and quality manufacturing), continuous improvement ('Kaizen'), precision engineering, and long-term employee development, with a strong focus on teamwork and customer satisfaction.
The Gyoda headquarters was pivotal as the administrative and innovation core of Showa, driving the development of technologies that supplied major global automotive and motorcycle brands for over 80 years, significantly contributing to vehicle performance and safety.
Prior to its merger into Hitachi Astemo, Showa Corporation maintained an extensive global footprint with numerous manufacturing plants, R&D centers, and sales offices. Key regions included Asia (Japan, Thailand, Indonesia, India, China, Vietnam), North America (USA, Canada, Mexico), South America (Brazil), and Europe (e.g., UK, Spain, Germany, Italy). These facilities were dedicated to designing, manufacturing, and supplying high-quality shock absorbers, power steering systems, drive train components, and other critical parts, supporting the global operations of major automotive and motorcycle OEMs with localized production and technical support.
1 Chome-14-1 Fujiwara
Gyoda
Saitama Prefecture
Japan
Address: 707 W. Cherry St., Sunbury, OH 43074, USA (Example of a key US facility)
To cater directly to North American OEM clients like Honda and Harley-Davidson, manage regional sales, provide localized engineering support, and ensure just-in-time delivery.
Address: Rojana Industrial Park, Ayutthaya, Thailand (Example of a key Asian facility)
To supply components to Japanese and international automotive/motorcycle manufacturers operating in the ASEAN region and for export, leveraging regional manufacturing advantages.
Address: Showa Autoparts Spain, S.A.U., Martorelles, Barcelona, Spain (Example of a key European facility)
To serve European automotive manufacturers, providing localized production, R&D support, and adaptation of products for the European market requirements.
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As of April 2025, Showa Corporation' leadership includes:
Showa Corporation has been backed by several prominent investors over the years, including:
Showa Corporation merged into Hitachi Astemo in January 2021 and ceased to operate as an independent entity. Consequently, there have been no executive new hires or exits specifically for 'Showa Corporation' within the last 12 months. All leadership roles and changes are now part of Hitachi Astemo's structure.
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Prior to its merger with Hitachi Astemo, Showa Corporation likely used standard corporate email formats. These formats are no longer active for 'Showa Corporation'. Employees are now part of Hitachi Astemo's communication systems. The examples below are speculative, based on common Japanese corporate structures for the historical Showa Corporation:
Common formats might have included [first_initial][last]@[domain] (e.g., jdoe@showa.co.jp) or [first].[last]@[domain] (e.g., john.doe@showa.co.jp). The primary domain was likely `showa.co.jp` or `showa1.com`.
Format
tyamada@showa.co.jp
Example
0 (This email format is historical and domains are likely inactive or redirected to Hitachi Astemo; emails sent to such addresses will not be delivered to former Showa personnel.)%
Success rate
Hitachi Astemo Official Website • November 2, 2023
Hitachi Astemo announced its participation in EICMA 2023 (Milan Motorcycle Show), where it showcased a wide portfolio of products and technologies for motorcycles. This included advanced suspension systems under the renowned Showa brand, demonstrating the continued innovation and market presence of Showa's legacy technologies within Hitachi Astemo....more
Hitachi Astemo Americas / PR Newswire • October 26, 2022
Hitachi Astemo Americas, Inc. introduced its new SHOWA G²as (Groove² Gas) Series aftermarket rear cushion units, specifically designed for Harley-Davidson Touring models from 2014 onwards. This launch highlighted the continued use and development of the Showa brand for high-performance motorcycle components in the aftermarket segment....more
Nikkei Asia / Hitachi Astemo News Release • January 5, 2021
Hitachi Astemo, Ltd. officially began operations, following the successful business integration of Hitachi Automotive Systems, Ltd., Keihin Corporation, Showa Corporation, and Nissin Kogyo Co., Ltd. This marked the formal end of Showa Corporation as an independent entity and its incorporation into the new global mega-supplier....more
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