Sumitomo Metal Mining Co., Ltd. revised earnings guidance for the six months ending September 30, 2021. For the period, the company now expects net sales of ¥566,000 million from previous guidance of ¥522,000, Profit of ¥83,000 million or ¥283.87 basic per share from previous guidance of ¥61,000 million or ¥203.80 basic per share.