The price of diamonds has risen to some extent in the first half of the year, so the gross profit margin of superhard materials is expected to remain stable in the second half of the year. The demand for photovoltaic products rebounded, and the diamond cutting process is in line with the future development direction of photovoltaics. In the early stage, the breakthrough of the upper pressure, the stock price trend from weak to strong super-hard material concept stocks Yu Diamond (300064) today did not change, once again rose nearly 6%, driving the Yellow River whirlwind (600172) rose more than 1%.
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