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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.
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#1
Kikusui Chemical Industries
KS Taika Mortar and intumescent fire-resistive coatings.
Manufacturer 100+ people Est. 1961 1 officePFP product manufacture Structural fire protectionNagoya, Aichi View firm -
#2
A&A Material
Calcium-silicate fireproofing boards and certified steel encasement.
Manufacturer 100+ people Est. 1924 1 officeCompartment walls & cavity barriers PFP product manufacture Structural fire protectionTokyo, Tokyo View firm -
Joint #3
Yanaken
Fireproofing, insulation and compartment penetration sealing.
Installer 2 officesFirestopping Structural fire protectionHigashiosaka, Osaka · HQ View firm -
Joint #3
Yoshino Gypsum
Fire-rated gypsum partition and shaft-wall systems.
Manufacturer 100+ people Est. 1937 1 officeCompartment walls & cavity barriers PFP product manufacture Structural fire protectionTokyo, Tokyo View firm -
#5
NICHIAS
Wrap-type and sprayed structural fireproofing since 1896.
Manufacturer 100+ people Est. 1896 1 officePFP product manufacture Structural fire protectionTokyo, Tokyo View firm
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.