Proto Corporation provided consolidated earnings guidance for the six months ended September 30, 2021 and full year ending March 31, 2022. For the six months, the company expected net sales of JPY 27,528 million, operating profit of JPY 2,683 million, ordinary profit of JPY 2,675 million, profit attributable to owners of parent of JPY 3,287 million and basic earnings per share of JPY 81.86. For the full year, the company expected net sales of JPY 60,000 million, operating profit of JPY 6,100 million, ordinary profit of JPY 6,080 million, profit attributable to owners of parent of JPY 5,615 million and basic earnings per share of JPY 139.82.