TOKYO -- Hitachi has tightened oversight of five core businesses including industrial machinery, seeking to improve its poor reputation for governance after quality testing scandal at one of its units.
Scandal-hit industrial group appoints audit heads to prevent misconduct

Hitachi is moving to bolster governance after the faulty testing scandal at Hitachi Chemical.
TOKYO -- Hitachi has tightened oversight of five core businesses including industrial machinery, seeking to improve its poor reputation for governance after quality testing scandal at one of its units.