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Across the lithography machine manufacturing and photonic computing chip manufacturing, the only listed company is Dazu Laser, the lithography machine leader, the company's gross margin of 36.94%, net profit margin of 10.92%, the third quarter of 2022 revenue 3.625 billion, an increase of -18.43%, attributable net profit of 382 million, an increase of -37.58%, The current total market value of 28.732 billion, the dynamic price-earnings ratio of 14.37 times.