Constant wattage vs Self-regulating cable, which one to choose?

For indoor underfloor heating, large-area driveway snow melting and buried engineering installation, constant wattage heating cables are preferred, featuring uniform heat output, stable temperature and longer service life. For pipe freeze protection and narrow spaces requiring automatic power adjustment, choose self-regulating cables. Constant wattage cables are the mainstream choice for European and American residential heating and snow melting projects.