Principius Diversus - Unipessoal, Lda is registered with ANEPC under Portaria 773/2009 as an entity for the commercialisation, installation and maintenance of fire-safety equipment, operating from the district of Lisboa (NIPC 508593778). Its registration includes the sale, installation and maintenance of: fire-resisting doors and glazing; fire compartmentation and thermal-insulation protection systems; automatic fire and gas detection systems; smoke control systems and devices; water-based extinguishing systems; automatic extinguishing systems using agents other than water, including water mist; emergency lighting. It holds ISO 9001 certificate E-6935 and NP 4413 certificate SME-0594, the Portuguese standard for extinguisher maintenance, and its ANEPC registration names four responsible technicians (técnicos responsáveis).