Founded in Oyten near Bremen in 1967, DOYMA manufactures sealing and fire protection systems for pipes and cables passing through walls and floors, marketed under the Curaflam brand. Its firestop range is covered by DIBt allgemeine bauaufsichtliche Zulassungen including Curaflam Konfix Pro under Z-19.17-2074, the Curaflam XS Pro sleeve system under Z-19.53-2182 and the Curaflam BSHB penetration unit under Z-19.17-324, with Übereinstimmungsbestätigungen published in its own download area. Around 240 people work for the business.