日章工業 Company Profile

Manufacturing of custom-made steel doors and steel lightweight doors, manufacturing of soundproof panels, and powder coating.

Founded in 1963, during the period when Japan transitioned from post-war recovery to high economic growth, we have been mass-producing ready-made sashes and steel doors to meet the increasing construction demands of the time. Eventually, as customer needs diversified, custom-made products became our main focus, and we shifted our core business to low-volume, high-variety production. After the decision to hold the Tokyo Olympics in 2020, new issues such as energy conservation, rising material costs, and a shortage of construction engineers emerged. In response, we began developing non-welded steel fittings to propose solutions for shortening construction periods and addressing labor issues. Collaborating with companies from different industries, our products have been increasingly adopted, particularly in the metropolitan area. We have received designation as a new collaborative certified company by the Ministry of Economy, Trade and Industry, as our new construction methods offer benefits to clients, construction companies, and interior contractors alike, and we are working to promote them. Additionally, we have developed and commercialized a power-free automatic door technology to address energy conservation issues. Our upcoming technologies and products are currently under patent application both domestically and internationally. They are gaining attention as environmentally friendly products suitable for a society with an aging population, contributing to CO2 reduction.