September 2026

Top 5 passive fire protection companies in Japan

Of the 18 passive fire protection companies in Japan listed in the OpenFire directory in September 2026, these profiles were viewed most by people and AI assistants.

  1. #1

    Kikusui Chemical Industries logo

    Kikusui Chemical Industries

    KS Taika Mortar and intumescent fire-resistive coatings.

    Manufacturer 100+ people Est. 1961 1 office
    PFP product manufacture Structural fire protection
    Nagoya, Aichi View firm
  2. #2

    A&A Material logo

    A&A Material

    Calcium-silicate fireproofing boards and certified steel encasement.

    Manufacturer 100+ people Est. 1924 1 office
    Compartment walls & cavity barriers PFP product manufacture Structural fire protection
    Tokyo, Tokyo View firm
  3. Joint #3

    Yanaken logo

    Yanaken

    Fireproofing, insulation and compartment penetration sealing.

    Installer 2 offices
    Firestopping Structural fire protection
    Higashiosaka, Osaka · HQ View firm
  4. Joint #3

    Yoshino Gypsum logo

    Yoshino Gypsum

    Fire-rated gypsum partition and shaft-wall systems.

    Manufacturer 100+ people Est. 1937 1 office
    Compartment walls & cavity barriers PFP product manufacture Structural fire protection
    Tokyo, Tokyo View firm
  5. #5

    NICHIAS logo

    NICHIAS

    Wrap-type and sprayed structural fireproofing since 1896.

    Manufacturer 100+ people Est. 1896 1 office
    PFP product manufacture Structural fire protection
    Tokyo, Tokyo View firm

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How the rankings work

Firms are ranked by how often their OpenFire directory profile was viewed during the calendar month, by people and by AI assistants. Search-engine crawlers, other automated traffic and link previews are not counted. Firms with equal views share a rank.

A firm with offices in several countries, or working across several categories, is ranked in each of them on the same monthly total. A ranking is only published where enough firms are listed and viewed for it to be meaningful.

A ranking reflects interest in a firm's listing. It is not an endorsement, and it is not a check of a firm's competence, certification or accreditation.