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].

Group 1 - The Cultivated Diamond Index increased by 2%, with most constituent stocks rising [1] - Four Seasons led the gains, followed by Huanghe Xuanfeng, World, Power Diamond, and Huifeng Diamond [1]

Group 1 - The A-share market for cultivated diamond stocks experienced a general increase, with notable gains in several companies [1] - Sifangda saw a rise of 6.03%, with a total market capitalization of 7.942 billion and a year-to-date increase of 48.39% [2] - World Diamond increased by 5.09%, with a market cap of 10.2 billion and a year-to-date increase of 209.81% [2] - Huifeng Diamond rose by 5.01%, with a market cap of 3.194 billion and a year-to-date decrease of 9.60% [2] - Huanghe Xuanfeng increased by 3.74%, with a market cap of 9.201 billion and a year-to-date increase of 53.37% [2] - Hengsheng Energy rose by 3.39%, with a market cap of 12.1 billion and a year-to-date increase of 300.04% [2] - *ST Yazhen increased by 3.24%, with a market cap of 11 billion and a year-to-date increase of 585.64% [2] - Power Diamond saw an increase of 2.41%, with a market cap of 9.968 billion and a year-to-date increase of 6.19% [2] - The formation of a MACD golden cross signal indicates a positive trend for these stocks [1]

河南黄河旋风股份有限公司 2025 年第四次临时股东会会议资料 河南黄河旋风股份有限公司 2025 年第四次临时股东会会议资料 证券简称：黄河旋风 证券代码： 600172 河南黄河旋风股份有限公司 2025 年第四次临时股东会会议资料 | 目 录 | | --- | | 一、河南黄河旋风股份有限公司 | 2 | | --- | --- | | 2025 年第四次临时股东会会议议程 | 2 | | 二、具体议案内容 | 3 | | 1、关于续聘会计师事务所的议案 | 3 | 第二项：主持人宣读本次会议的表决事项： 1、关于续聘会计师事务所的议案 第三项：回答股东的提问(现场部分)。 第四项：填写表决票、并投票表决，投票采用记名投票方式(现场部分)： 1、主持人解释填写方法、投票的顺序； 2、股东举手表决产生本次投票的唱票、记票、监票的两名股东代表； 3、填写表决票； 4、开始投票； 5、投票完毕； 6、宣读投票情况； 7、计算投票结果； 8、宣布审议事项的表决结果。 1 河南黄河旋风股份有限公司 2025 年第四次临时股东会会议资料 一、河南黄河旋风股份有限公司 2025 年第四次临时股东会会议议程 第一项： ...

Core Insights - The cultivated diamond concept has seen a rise of 1.21%, ranking 8th among concept sectors, with 10 stocks increasing in value, led by Wald, Sifangda, and Jingsheng Electromechanical, which rose by 12.72%, 7.01%, and 4.34% respectively [1][2] - The sector experienced a net inflow of 109 million yuan from main funds, with 8 stocks receiving net inflows, and 5 stocks exceeding 10 million yuan in net inflow, with Jingsheng Electromechanical leading at 134 million yuan [2][3] Stock Performance - The top performers in the cultivated diamond sector include: - Jingsheng Electromechanical: +4.34%, turnover rate 2.38%, net inflow 133.61 million yuan, net inflow rate 12.71% [3] - Wald: +12.72%, turnover rate 9.40%, net inflow 83.98 million yuan, net inflow rate 8.20% [3] - Sifangda: +7.01%, turnover rate 21.23%, net inflow 62.96 million yuan, net inflow rate 5.11% [3] Decliners - The stocks with the largest declines include: - *ST Yazhen: -4.99%, net outflow 32.34 million yuan, outflow rate -23.91% [4] - Zhongbing Hongjian: -3.69%, net outflow 153.16 million yuan, outflow rate -13.61% [4] - Boyun New Materials: -2.95%, net outflow 25.01 million yuan, outflow rate -12.81% [4]

Market Overview - The general equipment sector experienced a decline of 0.21% on November 26, with smart control leading the drop [1] - The Shanghai Composite Index closed at 3864.18, down 0.15%, while the Shenzhen Component Index closed at 12907.83, up 1.02% [1] Stock Performance - Notable gainers in the general equipment sector included: - Wald (688028) with a closing price of 74.90, up 12.72% and a trading volume of 141,800 shares, totaling 1.024 billion yuan [1] - Zhongshun Group (000039) closed at 9.35, up 10.00% with a trading volume of 1,947,400 shares, totaling 1.764 billion yuan [1] - Huashu High-Tech (688433) closed at 62.18, up 7.21% with a trading volume of 74,100 shares, totaling 447 million yuan [1] Decliners - Key decliners included: - Smart Control (002877) with a closing price of 9.45, down 9.91% and a trading volume of 681,500 shares, totaling 657 million yuan [2] - Rongyi Precision (920223) closed at 21.50, down 6.52% with a trading volume of 89,600 shares, totaling 195 million yuan [2] - Huafeng Co. (605100) closed at 43.91, down 5.39% with a trading volume of 84,600 shares, totaling 377 million yuan [2] Capital Flow - The general equipment sector saw a net outflow of 614 million yuan from institutional investors and a net outflow of 119 million yuan from retail investors, while retail investors had a net inflow of 733 million yuan [2] - Specific stock capital flows indicated: - Zhongshun Group (000039) had a net inflow of 47.416 million yuan from institutional investors, while retail investors experienced a net outflow of 18.000 million yuan [3] - Wald (688028) had a net inflow of 96.345 million yuan from institutional investors, with retail investors seeing a net outflow of 78.723 million yuan [3] - Sifangda (300179) had a net inflow of 81.558 million yuan from institutional investors, while retail investors faced a net outflow of 85.899 million yuan [3]

证券代码：600172 证券简称：黄河旋风 编号：临 2025-046 河南黄河旋风股份有限公司 关于续聘会计师事务所的公告 本公司董事会及全体董事保证本公告内容不存在虚假记载、误导性陈述或者 重大遗漏，并对其内容的真实性、准确性和完整性承担个别及连带责任。 成立日期：2013 年 12 月 13 日 组织形式：特殊普通合伙 注册地址：北京市西城区西直门外大街 112 号十层 1001 首席合伙人：胡柏和 重要内容提示： ● 拟聘任的会计师事务所名称：中勤万信会计师事务所（特殊普通合伙） （以下简称"中勤万信"） 一、拟聘任会计师事务所的基本情况 （一）机构信息 1、基本信息 会计师事务所名称：中勤万信会计师事务所（特殊普通合伙） 上年度末合伙人数量（2024 年 12 月 31 日）：76 人 上年度末注册会计师人数（2024 年 12 月 31 日）：393 人 上年度末签署过证券服务业务审计报告的注册会计师人数 （2024 年 12 月 31 日）：136 人 最近一年收入总额（经审计）（2024 年度）：47,668.50 万元 最近一年审计业务收入（经审计）（2024 年度）：40,751.23 万 ...

证券代码：600172 证券简称：黄河旋风 公告编号：临 2025-047 河南黄河旋风股份有限公司 关于召开2025年第四次临时股东会的通知 重要内容提示： 一、 召开会议的基本情况 (一)股东会类型和届次 2025年第四次临时股东会 (二)股东会召集人：董事会 (三)投票方式：本次股东会所采用的表决方式是现场投票和网络投票相结合的方 式 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈 述或者重大遗漏，并对其内容的真实性、准确性和完整性承担法律责任。 (四)现场会议召开的日期、时间和地点 召开的日期时间：2025 年 12 月 8 日 15 点 00 分 召开地点：河南省长葛市人民路 200 号 (五)网络投票的系统、起止日期和投票时间。 股东会召开日期：2025年12月8日 本次股东会采用的网络投票系统：上海证券交易所股东会网络投票系统 网络投票系统：上海证券交易所股东会网络投票系统 网络投票起止时间：自2025 年 12 月 8 日 至2025 年 12 月 8 日 采用上海证券交易所网络投票系统，通过交易系统投票平台的投票时间为股 东会召开当日的交易时间段，即 9:15-9:25，9 ...

（一）关于续聘会计师事务所的议案 具体内容详见同日在上海证券报和上海证券交易所网站（www.sse.com.cn） 披露的相关公告，本议案尚需提交公司股东会审议。 证券代码：600172 证券简称：黄河旋风 编号：临 2025-045 河南黄河旋风股份有限公司 第九届董事会第二十五次会议决议公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈 述或者重大遗漏，并对其内容的真实性、准确性和完整性承担法律责任。 河南黄河旋风股份有限公司（以下简称"公司"）第九届董事会第二十五次 会议通知于 2025 年 11 月 18 日以电子方式发出，于 2025 年 11 月 21 日上午 10:00 以通讯方式召开。会议应到董事 9 人，实到 9 人。本次会议符合《公司法》和《公 司章程》的规定，会议由董事长李戈先生主持，经与会董事审议，通过如下议案： 一、审议事项 表决结果：本议案以 9 票同意，0 票反对，0 票弃权获得通过。 （二）关于召开公司 2025 年第四次临时股东会的议案 具体内容详见同日在上海证券报和上海证券交易所网站（www.sse.com.cn） 披露的相关公告。 表决结果：本议案以 ...