Company Creed

Harmony and Sincerity

Management Philosophy

  • We are committed to satisfying all of our customer needs through sincere and conscientious work effort based on a quality-first principle.
  • We accurately grasp and respond to social needs and contribute to society through the company’s business efforts.
  • We are committed to training and making efforts in cultivating a broad vision and foresight.
  • We are committed to a select few and sound management and deliver appropriate profits to realize permanent development of the company and securing the welfare of employees.

Quality Policy

2018.acquired

In the Penstone Corporation, all employees have made efforts to improve quality on a daily basis under the following policies, “Quality Policy” and “Action Guidelines.”

Quality Policy

We are committed to bringing our customers new excitements and delights through “products and services” that exceed their expectations and imaginations.

Action Guidelines

1.We are committed to pursuing the quality that exceeds our customers’ (end-users’) expectations.
2.We are committed to promoting the prompt quality improvement by being responsive to the voices of our customers.
3.We are committed to enhancing the partnership with our customers and suppliers to improve the quality co-creatively and collaboratively.

ISO acquired

2018.5：IATF16949:2016 transitioned
2003.2：ISO/TS16949 acquired
2000.2：QS9000 acquired
1999.3：ISO9001 acquired
1998.2：ISO9002 acquired

Company outline

Trade Name Penstone Corporation
Foundation July 1918
Establishment April 2022
Capital 320,000,000 yen
Head Office 1-2-15 Yanoshinmachi, Aki-ku, Hiroshima City
Business Content Processing and sale of automobile glass
Manufacturing and sale of automobile mirrors
President Representative Director, President, and CEO Hikaru Nakamura
Directors & Executive Officers
Directors Taijiro Ishizaki
Hironori Numaoka
Kiyozo Kawano
Masao Harada
Executive Officers Shinji Nakagawa
Minoru Ishifuro
Masayuki Fujii
Major Customers in Japan
Mazda Motor Corporation, Suzuki Motor Corporation, Honda Motor Co.
Major Overseas Customers
Mazda Motor Corporation
  • AutoAlliance (Thailand) Co.
  • Mazda de Mexico Vehicle Operations, Inc.
  • Mazda North American Operations, Inc.
Suzuki Motor Corporation
  • Maruti Suzuki India Pvt.
  • Suzuki Motor (Thailand) Co.
  • Suzuki Indomobile Motor Company
Mitsubishi Corporation
  • Mitsubishi-Mitsubishi Motors Krama Yudha Indonesia Sdn.

Domestic Bases

  • Head Office / Hiroshima Plant

    736-0084
    1-2-15 Yanoshinmachi, Aki-ku, Hiroshima City, Hiroshima, Japan     TEL: +81-82-820-1604
    FAX: +81-82-820-1654     MAP →

  • Research and Development Center

    736-0084
    1-2-15 Yanoshinmachi, Aki-ku, Hiroshima City, Hiroshima, Japan     TEL: +81-82-820-1605
    FAX: +81-82-820-1654     MAP →

  • Tsuruhama Plant

    747-0833
    351-13 Aza-Tsuruhama, Oaza-Hamakata, Hofu City, Yamaguchi, Japan     TEL: +81-835-21-5311
    FAX: +81-835-21-5214     MAP →

  • Shintsukiji Mirror Plant

    747-0824
    23-2 Shintsukiji-cho, Hofu City, Yamaguchi, Japan     TEL: +81-835-28-7360
    FAX: +81-835-28-7361     MAP →

  • Shintsukiji Glass Plant

    747-0824
    29-3 Shintsukiji-cho, Hofu City, Yamaguchi, Japan     TEL: +81-835-25-7146
    FAX: +81-835-25-7300     MAP →

  • Toyohashi Office Plant 1

    441-8123
    914 Aza-Wakamatsu, Wakamatsu-cho, Toyohashi City, Aichi, Japan     TEL: +81-532-29-7760
    FAX: +81-532-29-7763     MAP →

  • Toyohashi Office Plant 2

    441-8123
    950-2 Aza-Wakamatsu, Wakamatsu-cho, Toyohashi City, Aichi, Japan     TEL: +81-532-39-7900
    FAX: +81-532-39-7120     MAP →

  • Kanto Sales Office

    321-0953
    MK Bldg. 4F 1-4-9 Higashishukugo, Utsunomiya City, Tochigi, Japan     TEL: +81-28-680-6701
    FAX: +81-28-680-6702     MAP →

  • <Affiliated Companies>
    Nishi-Nihon Modular Window Co., Ltd.

    747-0824
    29-3 Shintsukiji-cho, Hofu City, Yamaguchi, Japan     TEL: +81-835-22-9922
    FAX: +81-835-26-0534     MAP →