NiGK Corporation

NiGK Corporation (日油技研工業株式会社) is a Japanese industrial technology company headquartered in Kawagoe, Saitama, and a member of the NOF Group under NOF Corporation. Its business spans an unusually wide range for a mid-sized manufacturer: temperature-indicating materials and labels, sterilization indicators and materials, process and hygiene management products, infrastructure maintenance materials, electrical detection devices, marine monitoring equipment, and pyrotechnic components for rockets. The company summarizes this breadth with the catchphrase 'from the ocean to space' (海洋から宇宙まで), reflecting products used from deep-sea resource management to rocket motor igniters and satellite antenna deployment devices. Its core product families include 示温材 (temperature-indicating materials such as Thermo Label®), button-cell temperature data loggers (Thermo Button), sterilization materials (HPSP®), UV-sensitive labels (UV Label®), condensation-detecting Dew Label®, oil-leak detection indicators, construction and rock-anchoring materials, exothermic welding materials (Teika Weld®), power-free fault detectors for power and railway infrastructure, marine remote-monitoring instruments, and rocket pyrotechnics. Many of these are simple, power-free, adhesive or color-change products used in factories, electrical facilities, hospitals, food processing, and civil engineering. The company traces its roots to the founding of Teikoku Kayaku (帝国火工品) in 1938, while NiGK Corporation itself was established in 1980. It operates as part of the NOF Group, drawing on group strength for service delivery, and states a management philosophy of providing original technology and services that contribute to people and society, with the corporate creed 'wisdom, cooperation, participation' (知恵・協調・参加). It maintains a head office and factory, a sales headquarters, and an Osaka branch, and serves customers ranging from individual fisheries operators to overseas research institutions. NiGK markets itself on originality and reliability, positioning its products as ensuring the safety and reliability of many systems. It exhibits at trade shows such as Food Safety Japan, where it presents food-industry temperature management products including Retort Mark® labels that change color with retort sterilization, Thermo Button loggers, and UV and oil-leak detection labels. The company also publishes CSR, environmental, quality and ethics policies and describes its commitment to five safety pillars (environment, labor, equipment, product, logistics) under responsible care.

NiGK Corporation's history is presented by the company as running from the founding of Teikoku Kayaku (帝国火工品) in 1938 to the establishment of NiGK Corporation (日油技研工業) in 1980, and onward to the present. The 1938 origin places the company's roots in Japan's pyrotechnics and industrial explosives tradition, which explains why rocket pyrotechnics remain one of its business lines today. In 1980 the business was established under the NiGK name as part of what is now the NOF Group, the industrial group centered on NOF Corporation (日油株式会社). Over the following decades the company diversified from its pyrotechnic and chemical origins into a broad portfolio of industrial sensing and safety products. Its temperature-indicating materials (示温材), marketed under names such as Thermo Label®, became widely used in factories, electrical equipment maintenance and design, where simple adhesive labels that change color with temperature remove the need for power or instrumentation. The company extended this color-change principle into several adjacent product families: UV-sensitive labels that change color on ultraviolet exposure for UV equipment maintenance; Dew Label® products that change color on condensation and do not revert when dry, used for fault detection on circuit boards and electrical equipment; and oil-leak detection indicators that change color on insulating oil, used to visualize leaks at flange faces in substations and similar installations. A second major line is sterilization and hygiene management. The company supplies sterilization materials such as HPSP® and indicator products used to maintain and improve the reliability of sterilization operations in medical institutions, helping ensure safe use of medical instruments. Related products serve food safety, including Retort Mark® labels that change color with retort sterilization heat history, and button-cell temperature data loggers such as Thermo Button and the waterproof Thermo Button iBee, used to record and manage the transport and storage temperatures of food, pharmaceuticals and specimens. A Bluetooth-communicating logger, WeeziDot, has also been shown as a reference product. A third line covers infrastructure maintenance and civil engineering. The company supplies construction materials including urethane-resin rock consolidation agents and special-cement anchor fixing agents used in tunnel, civil engineering and building construction and repair across Japan; Teika Weld®, a heat-welding material that requires no technical qualification and is portable for grounding work on steel frames, rebar, electrical equipment and gas pipes; and power-free detectors that respond to lightning strikes and ground faults, used by electric power and railway companies and large factories to identify fault points early. A fourth line is survey and development equipment. The company develops and supplies marine instruments such as remote monitoring devices and survey equipment for the proper management of fishery and seabed resources, serving customers from individual fisheries operators to overseas research institutions. Finally, it supplies rocket pyrotechnics — igniters for space and defense rocket motors, and devices for rocket separation and satellite antenna deployment — supporting Japan's space development with pyrotechnic technology, with imagery credited to JAXA. The company summarizes this portfolio with the catchphrase 'from the ocean to space' (海洋から宇宙まで), and states a management philosophy of providing original technology and services that contribute to people and society, with the corporate creed 'wisdom, cooperation, participation' (知恵・協調・参加). It operates a head office and factory, a sales headquarters and an Osaka branch, and presents itself as a member of the NOF Group, leveraging group strength in service delivery. Its CSR framework commits to high corporate ethics, respect for human rights and diverse talent, responsible care based on five safety pillars (environment, labor, equipment, product, logistics), consideration of stakeholder interests, and community contribution. In recent years it has continued to exhibit at trade fairs such as Food Safety Japan, presenting food-industry temperature management products, and has published export-control classification information for its chemical indicator products.

• 2026

  Kawagoe Mayor Morita visited the company on July 15, 2026 for a factory tour and presidential interview.

• 2026

  Published export-control classification results for chemical indicator products (March 3, 2026).

• 2025

  Exhibited at Food Safety Japan 2025 (October 15–17), showing food-industry temperature management products.

• 1980

  Establishment of NiGK Corporation (日油技研工業) as part of the NOF Group.

• 1938

  Founding of Teikoku Kayaku (帝国火工品), the origin of the company's history.

Original-technology industrial manufacturer ensuring safety and reliability across systems, 'from the ocean to space'; part of the NOF Group.

• Thermo Label® (示温材)

  Temperature-indicating stickers and paints that change color with temperature; no power or instrumentation required.

• Thermo Button / Thermo Button iBee

  Button-cell type temperature data loggers for transport and storage temperature management; iBee is a waterproof version.

• WeeziDot

  Bluetooth-communicating data logger shown as a reference product.

• Retort Mark®

  Labels that change color with retort sterilization heat history; also offered in roll type.

• UV Label® / LED-compatible UV Label®

  Labels that change color on ultraviolet exposure, including versions for longer wavelengths.

• Dew Label®

  Labels that change color on condensation or water droplets and do not revert when dry.

• Royu Mark® oil-leak detection tape

  Tape that changes color on insulating oil; RM type has outdoor durability, RS type is highly sensitive.

• Heat Detection Tape

  Tape that detects high surface temperatures and visualizes them with a warning design.

• HPSP® sterilization materials

  Sterilization materials used to maintain and improve the reliability of sterilization operations.

• Teika Weld®

  Heat-welding material requiring no technical qualification, portable for grounding work.

• Construction materials

  Urethane-resin rock consolidation agents and special-cement anchor fixing agents for tunnels, civil engineering and buildings.

• Power-free fault detectors

  Detectors responding to lightning strikes and ground faults for power and railway infrastructure.

• Marine instruments

  Remote monitoring devices and survey equipment for fishery and seabed resource management.

• Rocket pyrotechnics

  Igniters for space and defense rocket motors, and devices for rocket separation and satellite antenna deployment.

1. 1日油技研工業株式会社 NiGK Corporation official websitenichigi.co.jp
2. 2日油技研工業について｜日油技研工業株式会社 NiGK Corporationnichigi.co.jp
3. 3日油技研工業の事業紹介｜日油技研工業株式会社 NiGK Corporationnichigi.co.jp
4. 4CSR｜日油技研工業株式会社 NiGK Corporationnichigi.co.jp
5. 5Nigk Corporation (Japan) - Wikidatawikidata.org