Diamond Electric Holdings Co., Ltd. manages automobile and electronic control equipment businesses in Japan. The company manufactures and sells ignition coils for automobiles, air conditioning equipment, electronic control devices, etc.; and transformers for electronic devices, power supplies for electronic devices, and various electronic devices and parts. It also offers heating and cooling igniters, electronic control devices, automotive electrical components, etc. Diamond Electric Holdings Co., Ltd. was founded in 2018 and is headquartered in Osaka, Japan.