MARUWA CO., LTD. engages in the production and sale of ceramics and electronic parts. It operates through the Ceramic Components and Lighting Equipment business segments. The Ceramic Components segment manufactures and sells electronic components, ceramic substrates, and products related to semiconductor manufacturing equipment. The Lighting Equipment segment manufactures and sells conventional lighting equipment as well as LED lighting equipment. The company was founded on April 5, 1973 and is headquartered in Owariasahi, Japan.