DOYMA is a leading manufacturer of sealing and fire protection systems based in Oyten. Our mission is to seal or seal off building penetrations with pipes and cables against water, fire and flue gas. We operate in the three main competencies areas of civil engineering, building services technology and power supply and provide the market with:   

Sealing systems for pipes and cables     
Single and multi-line house entries for supply and disposal lines     
Fire protection products for preventive structural fire protection     
Special designs and custom-made sealing systems