- Business
- Onamba Co., Ltd. (ONMBF) manufactures and sells electronic components, general-purpose electric wires, communication cables, and wire harnesses for consumer electronic devices, information office equipment, and industrial electronic devices; its core offerings include various wire harnesses for automobiles and industrial equipment, coaxial cables, medical and antibacterial cables, solar power generation cables, photovoltaic wiring units such as junction boxes and branch boxes, remote solar power plant monitoring systems (PVU-Finder®), storage battery monitoring systems, air conditioning control systems (E&E-Solution®), eco-friendly cables, vinyl wires, special cables, automotive connectors, cable processing parts, and harness processing machinery and parts. The company operates through three main segments—Japan, Europe and the United States, and Asia (excluding Japan)—with production bases and subsidiaries in countries including Singapore, Malaysia, Mexico, China, Indonesia, Thailand, Vietnam, Cambodia, the Czech Republic, and the United States, serving power, control, communications, and renewable energy applications for diverse customers in automotive, industrial machinery, and solar sectors. Founded in September 1941 by Iwao Ono and headquartered on the 19th floor of Midosuji Daibiru Building in Chuo-ku, Osaka, Japan, Onamba maintains a group of approximately 4,000 employees and lists on the Tokyo Stock Exchange Standard Market (securities code 5816). Recent developments include the continued expansion of its global production network and integrated capabilities from development to mass production, with no major acquisitions, partnerships, funding rounds, or strategic shifts reported in the last 1-2 years as of late 2025.