Core Viewpoint - A-shares experienced a decline in the morning session, with the Shanghai Composite Index down 0.72%, the Shenzhen Component Index down 0.56%, and the ChiNext Index down 1.23% [1] Market Performance - The Hainan sector showed resilience, with stocks like Luoniushan and Hainan Ruize hitting the daily limit, and Shennong Seed Industry rising over 10% [1] - The retail sector also performed well, with Central Plaza and Yonghui Supermarket among those reaching the daily limit [1] - Conversely, the cultivated diamond concept saw a decline, with World falling over 6% [1] - Other sectors that saw gains included duty-free shops, precious metals, engineering machinery, film and television, and non-ferrous metals [1] - Sectors that faced declines included power equipment, photovoltaic equipment, consumer electronics, wind power equipment, and AI smartphones [1] Trading Volume - The total market turnover exceeded 1.1 trillion yuan, a decrease of over 110 billion yuan compared to the previous day, with more than 3,800 stocks declining [1]

Group 1 - The cultivated diamond index has shown a significant adjustment, with most constituent stocks declining [1] - Strength Diamond experienced the largest drop, falling by 4.04% [1] - Other stocks such as Sifangda and World, as well as Guoji Precision and Huanghe Xunfeng, also saw declines [1]

Core Viewpoint - The cultivated diamond sector experienced a decline of 2.18% as of the market close on December 4, ranking among the top losers in the concept sector [1][3]. Market Performance - The cultivated diamond concept saw significant outflows of main funds, totaling 510 million yuan, with 14 stocks experiencing net outflows [2][4]. - The stocks with the largest net outflows included Sifangda, with a net outflow of 172 million yuan, followed by Guojijinggong and Huanghe Xuanfeng, with net outflows of 141 million yuan and 122 million yuan, respectively [2][4]. Stock Movements - Among the cultivated diamond stocks, Sifangda, Guojijinggong, and Liliang Diamond had notable declines, with Sifangda dropping by 6.46% [2][4]. - Conversely, stocks such as Boyun New Material, Henglin Co., and World saw increases, with Boyun New Material rising by 2.56% [1][5].

格隆汇12月4日｜沃尔德在互动平台表示，公司掌握BDD电化学高级氧化技术，公司可以提供各种规格 的厚膜及涂层型BDD电极，目前业务尚处投入期、未实现规模化收入。公司深耕单晶及多晶金刚石在 功率半导体器件热沉方面的应用，目前收入规模较小，对当期业绩影响极小。公司已研制成功并能够小 批量稳定生产纯CVD钻石振膜产品，并已开始进入小量市场推广阶段。 ...

每经AI快讯，12月4日，沃尔德在互动平台表示，金刚石热沉材料可用于电子、光电子等半导体器件散 热、高端医疗器械的热传感器及快速散热部件等领域。公司深耕单晶及多晶金刚石在功率半导体器件热 沉方面的应用，目前收入规模较小，对当期业绩影响极小。 （文章来源：每日经济新闻） ...

Core Viewpoint - The market experienced a downturn on December 3, with the ChiNext index seeing significant drops, while the cultivated diamond sector surged, indicating a shift in investor interest towards this emerging industry [1] Industry Developments - The 2025 Cultivated Diamond Industry Conference will be held in Zhengzhou from December 5 to 6, featuring the unveiling of the "Henan Province Cultivated Diamond Promotion Center" aimed at creating an integrated service ecosystem covering inspection, trading, design, and brand incubation [1] - Approximately 30 key projects in the industry chain are expected to be signed at the conference, with a total investment of no less than 15 billion yuan, focusing on strengthening and extending the industry chain [1] - The conference will also release the "2025 Cultivated Diamond Industry Development Report," which will analyze global industry chains, market supply and demand, and consumption trends, providing crucial insights for industry decision-making and development [1] Market Trends - According to Zhongyuan Securities, traditional demand in the sector is contracting, while functional diamonds are gaining traction, indicating a shift in market dynamics [1] - The demand for traditional superhard products is under pressure, leading the industry into a downward cycle; however, continuous technological breakthroughs in functional diamonds are opening new growth opportunities [1] - Diamond/copper composite materials, particularly for high-end chip cooling applications, are identified as a key development direction and potential growth point for the industry in the short term [1]

Group 1: Market Performance - The A-share cultivated diamond sector showed strong performance, with Sifangda rising nearly 15%, Huifeng Diamond up over 10%, and Huanghe Xuanfeng hitting the daily limit [1][2] - Other companies such as Liliang Diamond, Hengsheng Energy, Chuangjiang New Materials, Inno Laser, Boyun New Materials, and Guojijiang Precision also experienced significant increases [1] Group 2: Industry Conference - The 2025 Cultivated Diamond Industry Conference is approaching, scheduled for December 5-6 in Zhengzhou, aiming to promote deep integration and upgrading of the industry chain [3] - The conference will focus on three main goals: building platforms, addressing shortcomings, and strengthening support, with plans to sign approximately 30 projects totaling no less than 15 billion yuan [3] - The event is expected to enhance Zhengzhou's influence in the cultivated diamond industry and establish a comprehensive "3+X" industry chain system [3] Group 3: Industry Background - Cultivated diamonds, a high-value consumer branch of the diamond industry, are rapidly growing due to their environmental benefits, cost-effectiveness, and stable supply [4] - The global cultivated diamond market is projected to reach $15 billion by 2026, with a compound annual growth rate exceeding 15% [4] - China's position as the largest producer of cultivated diamonds is expected to account for over 40% of the global market share [4] Group 4: Market Challenges and Opportunities - The market price of synthetic diamonds, particularly mid-to-low-end industrial products, has been under pressure due to previous capacity expansions and slowing demand in traditional downstream sectors [5] - Companies are exploring new value in diamond materials, particularly their excellent thermal conductivity, which is becoming crucial for high-power electronic devices [5][6] - The demand for diamond substrates in data centers and electric vehicles is increasing, as they significantly enhance heat dissipation efficiency [6][7] Group 5: Future Prospects - The semiconductor industry's evolution towards smaller nodes necessitates effective heat management, positioning diamonds as essential materials [7] - Companies like Guojijiang Precision, World, and Sifangda are recognized for their potential in the diamond thermal management market [7]

Group 1: Market Performance - The A-share cultivated diamond sector showed strong performance, with Sifangda rising nearly 15%, Huifeng Diamond up over 10%, and Huanghe Xuanfeng hitting the daily limit [1][2] - Other companies such as Liliang Diamond, Hengsheng Energy, Chuangjiang New Materials, Inno Laser, Boyun New Materials, and Guojijiang Precision also experienced significant increases [1][2] Group 2: Industry Conference - The 2025 Cultivated Diamond Industry Conference is approaching, scheduled for December 5-6 in Zhengzhou, aiming to promote deep integration and upgrading of the industry chain [3] - The conference will focus on three main goals: building platforms, addressing shortcomings, and strengthening support, with plans to integrate the cultivated diamond industry with the gold and jewelry sector [3] - Expected outcomes include the establishment of the Henan Province Cultivated Diamond Promotion Center and signing of approximately 30 projects with a total investment of no less than 15 billion yuan [3] Group 3: Industry Background - Cultivated diamonds, a high-value consumer product branch of the diamond industry, are rapidly growing due to their environmental benefits, cost-effectiveness, and stable supply [4] - The global cultivated diamond market is projected to reach 15 billion USD by 2026, with a compound annual growth rate exceeding 15% [4] - China's position as the largest producer of cultivated diamonds is expected to secure over 40% of the global market share [4] Group 4: Market Challenges and Opportunities - The market price of synthetic diamonds, particularly mid-to-low-end industrial products, has been under pressure due to previous capacity expansions and slowing demand in traditional downstream sectors [5] - The exceptional thermal conductivity of diamonds is becoming a key factor in unlocking new value, especially in high-power electronic devices [6] - Companies like Guojijiang Precision are seeing increased demand for diamond heat sinks, with expected sales revenue surpassing 10 million yuan this year [6][7]

Group 1 - The superhard materials sector experienced a significant surge on December 3, with notable stock price increases for several companies [1] - Sifangda's stock rose over 15%, Huifeng Diamond increased by more than 12%, and Huanghe Xuanfeng hit the daily limit [1] - Other companies such as Liliang Diamond, World, Guojijiangong, and Boyun New Materials also saw substantial gains [1] Group 2 - The superhard materials index reached 2821.80, marking a 5.02% increase [2] - Specific stock performances included Sifangda at 17.86 with a 15.82% rise, Huifeng Diamond at 37.38 with a 12.18% increase, and Huanghe Xuanfeng at 6.77 with a 10.08% rise [2] - Other notable stock performances included Liliang Diamond at 40.40 with an 8.02% increase, World at 68.00 with a 5.59% rise, and Guojijiangong at 34.32 with a 5.08% increase [2]

Core Viewpoint - The superhard materials sector has experienced a significant surge, with multiple stocks showing substantial gains on December 3rd, indicating a strong market interest and potential investment opportunities in this industry [1]. Group 1: Stock Performance - Sifangda's stock price increased by 15.82%, reaching 17.86 [2] - Huifeng Diamond's stock rose by 12.18%, reaching 37.38 [2] - Huanghe Xuanfeng's stock hit the daily limit, increasing by 10.08% to 6.77 [2] - Liliang Diamond's stock grew by 8.02%, reaching 40.40 [2] - Other notable performers include World (up 5.59% to 68.00), Guojijiangong (up 5.08% to 34.32), and Boyun New Materials (up 1.64% to 9.91) [2].