Koolen Industries invests in hydrogen bromine flow battery maker Elestor Gallery Koolen Industries invests in hydrogen bromine flow battery maker Elestor Elestor News Koolen Industries invests in hydrogen bromine flow battery maker Elestor Elestor2019-07-19T10:00:56+02:00July 19th, 2019| Arnhem, July 19, 2019 Koolen Industries has signed the [...] > Read More 2