High corrosion-resistant steel plate used! Steel fittings with high rust resistance - rust-proof doors.

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日章工業

Building materials, supplies and fixtures

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Founded in 1963, during the period when Japan transitioned from post-war reconstruction to high economic growth, we began mass production of 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 towards low-volume, high-variety production. Following the decision to host the Tokyo Olympics in 2020, new issues such as energy conservation, rising material costs, and a shortage of construction engineers emerged. In response, we developed non-welded steel fittings and began proposing solutions to shorten construction periods and address 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 partnership certified company by the Ministry of Economy, Trade and Industry, promoting a new construction method that offers benefits to clients, construction companies, and interior contractors alike. Additionally, we have developed and commercialized technology for power-free automatic doors 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 CO2 reduction and an aging society.

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