2-43-7 Ishinazaka-cho, Hitachi City, Ibaraki Prefecture,Japan.

Japanese Page

0294-53-2611

ABOUT SHINWA

Company Profile


Greetings

"Since its founding in 1969, Shinwa Manufacturing has honed its craftsmanship in coil winding and assembly as a specialist manufacturer of automotive solenoid valves. Alongside the evolution of automobiles, we mastered molded forming technology, expanding our product range to encompass ignition systems, fuel systems, intake and exhaust systems, transmission gear control systems, voltage control systems, flow switching control systems, and many others. We sincerely thank you for your continued patronage, which has enabled our company to develop its business to this day.

The automotive industry is currently undergoing a shift from internal combustion engines to electrification and automation, marking a once-in-a-century transformation. Among these changes, the shift toward electrification, driven by heightened environmental awareness, is progressing rapidly. Consequently, automakers are successively announcing measures to achieve carbon neutrality.

Shinwa Manufacturing will continue to be a company that keeps pace with the changing waves of the transforming automotive industry, meeting customer needs. Building on the technical expertise and trust cultivated through over 50 years of business activities, we will leverage our passion for manufacturing and our “on-site capabilities”—guided by the mottos of “overall optimization” and “unity of knowledge and action”—to continually provide compelling products to customers worldwide.

Furthermore, we are now expanding our focus beyond the automotive industry and actively pursuing new customers across a wide range of sectors. We are also advancing into the fields of molded products using elastomers (rubber-based resins) for sports equipment and the medical field. By broadening our reach into diverse industries, we aim to become a company where every employee can work with a sense of security and fulfillment. We sincerely ask for your continued guidance and support moving forward.

President and Representative Director Kiyoshi Hashimoto


Company Profile

  • Name

    Shinwa Co., Ltd.

  • Location

    2-43-7 Ishinazaka-cho, Hitachi City, Ibaraki Prefecture, Japan.

  • Established

    December 1969

  • Representative

    President and Representative Director: Kiyoshi Hashimoto
    Director and Head of Manufacturing Department: Sō Fujimoto

  • Capital

    30 million yen

  • Employees

    90 people

  • Main Products

    ・Automotive Components
    Ignition systems, fuel systems, intake/exhaust systems, transmission gear control systems, Voltage control systems, flow switching control systems, EV systems
    ・Solenoid Valves for Automotive Components
    ・Solenoid Valves for General-Purpose Machinery

  • Major business partners (honorific titles omitted)

    Astemo Corporation Sawa Plant
    Astemo Corporation Atsugi Plant
    Astemo Corporation Yamanashi Plant
    Astemo Corporation Gunma Plant
    Astemo Hanshin Corporation
    Shindengen Mechatronics Corporation
    Corporation Tabata

History

December 1969
Kyowa Seisakusho Co., Ltd. was established through joint investment by each company in the housing complex

May 1970
Separated and independent as a manufacturing factory for automobile electrical components

December 1970
Increased capital to 20 million yen

December 1972
Increased capital to 40 million yen

August 1979
Changed the trade name to Shinwa Co., Ltd.

August 1995
ISO9002 Acquired

March 2000
Building B Constructed

April 2003
ISO9001 Acquired

August 2005
HI-KES acquisition

June 2006
Genji Suzuki appointed President and Representative Director

March 2011
Reduced capital to 30 million yen
Purchase of Building C

June 2014
Hiroshi Kuboki appointed President and Representative Director

March 2024
Installation of solar power generation system on Building B

June 2024
Kiyoshi Hashimoto appointed President and Representative Director

February 2026
Obtained Business Continuity Strengthening Plan certification

Certification

JQA-0946
KES2-HI-0027

Main Equipment

Vertical Injection Molding Machines: 31 units
Breakdown
220-ton vertical injection molding machines: 3 units
150-ton vertical injection molding machines: 1 unit
100-ton vertical injection molding machines: 13 units
75-ton vertical injection molding machines: 3 units
60-ton vertical injection molding machines: 7 units
Parting molding machines: 4 units

Horizontal molding machines: 7 units
Breakdown
Horizontal molding machine 300t: 1 unit
Horizontal molding machine 180t: 3 units
Horizontal molding machine 150t: 1 unit
Horizontal molding machine 110t: 1 unit
Horizontal molding machine 80t: 1 unit

Manufacturing Department Equipment
・ Winding Machines (Automatic): 4 units
・ Winding Machines (General-purpose): 6 units
・ Various Characteristic Inspection Devices: Multiple units
・ Fusing Machines: Multiple units

Engineering Department Equipment
・ Press Machines [60 tons]: 2 units
・ NC Milling Machine: 1 unit
・ NC Lathe: 1 unit
・ General-purpose Lathe: 1 unit
・ General-purpose milling machine: 1 unit
・ Surface grinder: 2 units
・ 2D/3D CAD: 2 units
・ Flow analysis software: 1 unit

Quality Assurance Department Equipment
・ CNC coordinate measuring machine: 2 units
・ Microscope: 1 unit
・ Measuring microscope: 1 unit
・ Surface roughness/Contour measuring instrument: 1 unit
・ Amsler testing machine: 1 unit
・ Magnifying projector: 1 unit
・ Roundness measuring machine: 1 unit
・ Spring testing machine: 1 unit
・ Vickers hardness tester: 1 unit
・ Thermal shock chamber: 1 unit
・ X-ray inspection device: 1 unit
・ Simple CT inspection device: 1 unit

FACTORY

■Factory site: 6,782.0 square meters
■Factory building: Building A 1194.6 square meters / Building B 2,514.5 square meters / Building C 1,094.7 square meters