10倍牛股，历史新高！从跌停到涨超8%

Market Overview - High dividend assets strengthened, with the coal sector leading the gains, while banking, electricity, and transportation sectors also performed actively [1] - As of the morning close, the Shanghai Composite Index fell by 0.09%, the Shenzhen Component Index decreased by 0.19%, and the ChiNext Index dropped by 0.5% [1] Individual Stock Performance - Hai Xin Food (002702) hit the daily limit, marking its sixth consecutive rise, with the company confirming no major changes in its fundamentals [2] - Tianpu Co. (605255) resumed trading and saw a morning increase of 7.12%, after a significant rise of 451.8% from August 22 to November 27, indicating potential trading risks [4] - Xin Ke Materials (600255) initially dropped over 1% but then surged to hit the daily limit, with over 740,000 shares still on the limit order at midday [4] Cultivated Diamond Sector - The cultivated diamond sector saw significant gains, with stocks like Sifangda (300179) and Huifeng Diamond rising sharply [7] - The cultivated diamond industry conference is set to take place on December 5-6, 2025, in Zhengzhou, aiming to establish a comprehensive service ecosystem and sign key projects with a total investment of no less than 15 billion [11] - The cultivated diamond sector has been active this year, driven by technological breakthroughs and new application scenarios, particularly in high-function materials for strategic industries [11] Industry Insights - Traditional superhard product demand is under pressure, but ongoing technological advancements in functional diamond materials are opening new growth opportunities [12] - Diamond/copper composite materials for high-end chip cooling are seen as a key development direction, with increasing recognition from downstream customers [12]