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Sanpo Electrical And Mechanical Engineering Corporation

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Japanese engineering firm providing electrical, instrumentation, HVAC and plumbing systems for factories, clean rooms and buildings.

Last updated September 27, 2026

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Overview

Sanpo Electrical And Mechanical Engineering Corporation, commonly known by the abbreviation SEAMEC and in Japanese as Sanpo Denki Kabushiki Gaisha (三宝電機株式会社), is a Japanese engineering company headquartered in Kita-ku, Osaka. It plans, designs, installs and maintains comprehensive building and industrial facility systems, with core disciplines covering electrical works, instrumentation and control, air-conditioning, plumbing and sanitation. Its customer base spans factories, clean rooms, office buildings, plants and apartment complexes, and the company positions itself around the delivery of an 'optimal environmental space'. The company traces its origins to 1942, when it took over the management of Mikasa Electric Manufacturing Works and handled electric tool repair for Nakajima Aircraft (Kyushu). It was renamed Kanoh Electric Manufacturing Works in 1945 and reorganized as Sanpo Electric Co., Ltd. in 1948 in Oyodo-ku (now Kita-ku), Osaka. From the 1950s onward it expanded its branch network across Japan, adding a Tokyo sales office in 1958 and later establishing 17 branches and sales offices nationwide. New business divisions followed: a second engineering department (the forerunner of today's refrigeration business) in 1961, an instrumentation and control division in 1971, and an overseas plant department in 1981. SEAMEC has also built an international footprint. It established a local subsidiary in Indonesia in 1997 and subsequently added entities in Malaysia and Vietnam. The company obtained ISO 9001 quality certification in 1998 and later added ISO 14001 environmental certification. In 2015 it completed a new head office building in Oyodo, Kita-ku. Its technology development has included a patented airflow analysis system (1997) and, more recently, remote monitoring and IoT capabilities. Today SEAMEC operates across several business areas: electrical construction, instrumentation and control, HVAC and water supply/drainage works, maintenance and security services, remote monitoring and IoT, research and development, overseas operations, and clean equipment products. It also runs training and research centers. The company has publicly committed to the UN Sustainable Development Goals as a central management principle, setting targets on CO2 reduction proposals, renewable energy installation support, recycling rates, safety and quality, workforce diversity and community contribution. It is a recipient of Japan's 'Health and Productivity Management Outstanding Organization' (健康経営優良法人) certification and has engaged in community activities such as corporate hometown tax donations and donating basketballs to schools in Kita-ku, Osaka.

History

The company's history begins in 1942, when it took over the management rights of Mikasa Electric Manufacturing Works and was founded, handling electric tool repair for Nakajima Aircraft (Kyushu). In 1945 it was renamed Kanoh Electric Manufacturing Works. In 1948 it was reorganized as Sanpo Electric Co., Ltd. (三宝電機株式会社) in Oyodo-ku, Osaka (present-day Kita-ku). During the post-war period, the company expanded its sales and service network. In 1958 it established a Tokyo sales office (now the Tokyo branch), and subsequently set up 17 branches and sales offices across Japan. It diversified its engineering capabilities: in 1961 it created a Second Engineering Department (the forerunner of today's refrigeration business), in 1971 an Instrumentation and Control Division (now the Control Technology Section), and in 1981 an Overseas Plant Department (now the Overseas Business Headquarters). In 1984 it established the Sakai Research Laboratory (later consolidated into the Head Office Technology Development Center). In 1997 it obtained a patent for an airflow analysis system and established a local subsidiary in Indonesia, later adding subsidiaries in Malaysia and Vietnam. In 1998 it acquired ISO 9001 quality certification and subsequently added ISO 14001 environmental certification. In 2015 it completed a new head office building in Oyodo, Kita-ku. More recently, the company has focused on sustainability and digitalization. It has committed to the SDGs with measurable targets, including CO2 reduction proposals to customers, support for renewable energy installations, improved recycling rates, and workforce diversity goals. It has also adopted ICT, IoT (i-Construction), BIM software, and new technologies such as robots, drones and assist suits to improve productivity. The company continues to operate through its network of branches and overseas subsidiaries, providing integrated engineering services.

  • 2015

    Completed new head office building in Oyodo, Kita-ku

  • 1998

    Acquired ISO 9001 quality certification (later added ISO 14001 environmental certification)

  • 1997

    Obtained patent for airflow analysis system; established local subsidiary in Indonesia (later Malaysia and Vietnam)

  • 1984

    Established Sakai Research Laboratory (later consolidated into Head Office Technology Development Center)

  • 1981

    Established Overseas Plant Department (now Overseas Business Headquarters)

  • 1971

    Established Instrumentation and Control Division (now Control Technology Section)

  • 1961

    Established Second Engineering Department (now refrigeration business)

  • 1958

    Established Tokyo sales office (now Tokyo branch); later set up 17 branches and sales offices nationwide

  • 1948

    Reorganized as Sanpo Electric Co., Ltd. in Oyodo-ku, Osaka (present-day Kita-ku)

  • 1945

    Renamed Kanoh Electric Manufacturing Works

Products and positioning

Provider of optimal environmental spaces through integrated electrical, control, HVAC and sanitation engineering, with a focus on quality, safety, energy efficiency and sustainability.

  • Electrical construction

    Planning, design, installation and maintenance of electrical systems for factories, plants, buildings and apartments.

  • Instrumentation and control

    Instrumentation and control engineering for industrial and building facilities.

  • HVAC and plumbing/sanitation

    Air-conditioning, water supply, drainage and sanitation works.

  • Maintenance and security services

    Ongoing maintenance and security operations for facility systems.

  • Remote monitoring and IoT

    Remote monitoring and IoT solutions for facility management.

  • Clean equipment

    Clean equipment products for controlled environments.

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