Hitachi, Ltd.; Hitachi Corporation
The full official name of the Japanese multinational conglomerate Hitachi. Used in formal and business contexts.
Hitachi, Ltd. was founded in 1910.
He works for Hitachi, Ltd.
日立 is the common short name for the company or the city; 日立製作所 is the full formal corporate name.
From the city name 日立 (Hitachi) and 製作所 (manufacturing works). The company was founded in the city of Hitachi, Ibaraki Prefecture.