Back ELECTRA M&E Deutschland GmbH opened a new location at Valvo Park in Hamburg-Langenhorn on September 1. Electra > News > ELECTRA M&E Deutschland GmbH opened a new location at Valvo Park in Hamburg-Langenhorn on September 1. ELECTRA M&E Deutschland GmbH opened a new location at Valvo Park in Hamburg-Langenhorn on September 1.