Autodíly Tria s.r.o.
Kladno - Dubí
Kladno - Dubí
Rybník
Kladno - Kročehlavy
Velešovice
Nová Ves u Chotěboře
Milovice nad Labem
Ostrava - Vítkovice
Evolute springs are an important spring and damping element, they are used mostly in railway vehicles, but also as an integral part of a number of machinery devices. An expert in the production of evolute, i.e., conical band springs, is the SV výrobní company located in Prostějov.