TOKYO, Oct 3, 2017 - (JCN Newswire) - Showa Denko ("SDK"; TSE:4004) announces that, effective October 2, 2017, it completed acquisition of all shares in SGL GE Holding GmbH (SGL GE), a graphite electrode production company, and made it a wholly owned subsidiary of SDK. The acquired company's name was changed to "SHOWA DENKO CARBON Holding GmbH"...