Pol-Skone manufactures internal and entrance doorsets in Lublin, including its FR EI 30 fire range. That range holds Krajowa Ocena Techniczna ITB-KOT-2020/1370, second edition, issued by Instytut Techniki Budowlanej in June 2025 and valid to June 2030, for internal and internal entrance fire doorsets. The company additionally holds ITB-KOT-2019/0804, second edition, covering doorsets that combine burglary resistance class RC4 with EI 30 fire resistance, and a further assessment covering doorsets declared as fire-resisting and smoke-tight. Its own product pages explain classification under EN 13501-2 but do not quote an assessment number.