In April 2021, Denka’s housing business merged with Nakagawa Techno's metal gutters business, and April 2024 marks the forth year since the merger. Our employees will work together to take on the challenge of developing specialty products and creating new businesses with the keywords of labor saving, disaster prevention, and environmental awareness based on our traditional core businesses, such as our mainstay products Toyo and Hisago rain gutters, which have been loved by many over the years.