Ratna Oy is a Finland based company designing field operation and access solutions for smart cities using IoT and blockchain technologies. The management team has a long corporate experience from mobile networking and physical access systems combined with an innovative and fresh development team.
petri@ratna.fi
+358 50 514 9690
Niementie 3
Puumala 52200
Finland
jouni.koljonen@ratna.fi
+358 50 514 9690
Punavuorenkatu
Helsinki 00120
Finland
tuomas.ebeling@ratna.fi
+358 50 514 9690
Jämeräntaival 7
Espoo 02150
Finland
akseli.koljonen@ratna.fi
+358 50 514 9690
Opastinsilta 2 3
Helsinki 00520
Finland