TOKYO, Mar 26, 2018 - (JCN Newswire) - Showa Denko ("SDK"; TSE:4004) has expanded its capacity to produce high-purity hydrogen bromide (HBr), which is used in the manufacture of semiconductors, and started operation of the expanded HBr plant in this March.

High-purity HBr is a specialty gas mainly used for fine-etching of polysilicon in the...