 TOKYO--BUSINESS WIRE--Mitsubishi Electric Corporation TOKYO: 6503 announced today that its environmental efforts related to supply chains have earned the company selection to the 2020 Supplier engagement leaderboard, the highest ranking in the CDP Supplier Engagement program operated by CDP, an international non-governmental organization that supports environmental disclosure. This is the fourth year in which Mitsubishi Electric has earned a top ranking for excellent actions and strategie 