Useful links
- Cech of Heating Engineers and Plumbers of the Czech Republic — www.cechtop.cz
- Community of Chimney Sweeps of the Czech Republic — www.skcr.cz
- Office for Standardization — www.unmz.cz/urad/unmz
- Technical Equipment of Buildings — www.tzb-info.cz
- Technical and Testing Institute of Construction Prague — www.tzus.cz