Bunka Shutter Co Ltd is a building materials company that manufactures and sells shutters and construction materials in five diversified business segments. Bunka Shutter is based in Japan and primarily produces products such as light shutters, heavy-duty shutters for large-scale commercial facilities, window shutters, and sliding doors. Its second segment, construction materials, produces exterior products. Bunka operates a service business and a separate reform business, both focused on repair and maintenance services, and a refurbishment business. Lastly, the "other" business segment consists of a water sealing business, solar power business, and travel agency services. The company produces most of its revenue in Japan.