Yotai Refractories Co., Ltd. manufactures and sells refractory products and related engineering services primarily in Japan. The company produces a range of refractory bricks, including basic bricks, high alumina bricks, clay bricks, and silica bricks; unshaped monolithic refractories such as powder-type and rammed earth-type products; and new ceramics for high-temperature applications in steel, cement, nonferrous metals, glass, environmental equipment, chemistry, lime, carbon black, and electronic parts industries. It also provides furnace installation engineering, including design, construction, supervision, and maintenance services for industrial kilns and environmental facilities. Founded in August 1936 and headquartered in Kaizuka-City, Osaka, Japan, Yotai Refractories operates through Refractories and Engineering segments, serving major customers such as Nippon Steel Corporation, JFE Steel Corporation, Sumitomo Osaka Cement Co., Ltd., AGC Inc., and Kyocera Corporation. In recent developments, ASO Corporation completed the acquisition of a 35.44% stake in the company, and Yotai announced a share buyback program to acquire up to 359,000 shares worth ¥560 million as part of its shareholder return policy under the medium-term management plan. Sales reached ¥29,305 million and employment stood at 538 as of March 31, 2025.