September 2026

Top 5 passive fire protection companies

Of the 421 passive fire protection companies listed in the OpenFire directory in September 2026, these profiles were viewed most by people and AI assistants.

  1. #1

    A400 - Projetistas e Consultores (Fire & Safety Department) logo

    A400 - Projetistas e Consultores (Fire & Safety Department)

    Green By Default

    Consultancy 100+ people Est. 1995 2 offices
    Alarm monitoring Car park ventilation CFD modelling +29 more
    Porto, Porto · HQ View company
  2. #2

    Nacional Fire logo

    Nacional Fire

    Fire projects, AVCB licensing and installation across Brazil.

    Supplier 1–5 people Est. 2024 1 office
    Detection & suppression testing Alarm monitoring Building safety disputes +45 more
    São Paulo, São Paulo View company
  3. #3

    Extincêndios - Equipamentos de Protecção e Segurança, S.A logo

    Extincêndios - Equipamentos de Protecção e Segurança, S.A

    ANEPC-registered for 7 SCIE categories, Lisboa.

    Installer 21–100 people 1 office
    Compartment walls & cavity barriers Emergency lighting Fire alarm systems +7 more
    Lisboa, Lisboa View company
  4. #4

    123 Fire (a division of MB Plant Limited) logo

    123 Fire (a division of MB Plant Limited)

    LPCB-approved inspector of fire and security doors and shutters, covering their repair and maintenance.

    Installer 21–100 people 1 office
    Fire door inspection & survey Firestopping
    Goole, England View company
  5. #5

    Veolia Portugal, S.A logo

    Veolia Portugal, S.A

    ANEPC-registered for 6 SCIE categories, Lisboa.

    Installer 21–100 people 1 office
    Compartment walls & cavity barriers Emergency lighting Fire doorset manufacture +6 more
    Lisboa, Lisboa View company

Browse all passive fire protection companies →

How the rankings work

Companies 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. Companies with equal views share a rank.

A company 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 companies are listed and viewed for it to be meaningful.

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