Tranche Update on Yotai Refractories Co., Ltd.'s Equity Buyback Plan announced on May 13, 2022.

YOTAI REFRACTORIES CO.,LTD. is a Japan-based company mainly engaged in the manufacture and sale of refractory products, as well as the furnace installation engineering business. The Company operates in two business segments. The Refractory Products segment is engaged in the manufacture and sale of various refractory bricks such as basic bricks, high alumina bricks, clay bricks and silica bricks, and unshaped refractory products for irons and steels, nonferrous metals, cements, glass, furnaces and environmental equipment related kilns uses. The Engineering segment is engaged in the design and construction of various industrial kilns and environmental facilities that use refractories, as well as the contacted maintenance business.