证券代码：603612 证券简称：索通发展 公告编号：2025-044 索通发展股份有限公司 重要内容提示： | 权益变动方向 | 比例增加□ | | 比例减少☑ | | --- | --- | --- | --- | | 权益变动前合计比例 | 28.01% | | | | 权益变动后合计比例 | 27.89% | | | | 本次变动是否违反已作出的承诺、意 向、计划 | 是□ | 否 | | | 是否触发强制要约收购义务 | 是□ | 否 | | 一、 信息披露义务人及其一致行动人的基本信息 1.身份类别 | | 控股股东/实际控制人及其一致行动人 □其他 5%以上大股东及其一致行动人 | | --- | --- | | 投资者及其一致行动人的身份 | □合并口径第一大股东及其一致行动人（仅适用 | | | 于无控股股东、实际控制人） | | | □其他______________（请注明） | 关于股东权益变动触及 1%刻度的提示性公告 郎光辉及其一致行动人王萍、玄元私募基金投资管理（广东）有限公司－玄 元科新 182 号私募证券投资基金保证向本公司提供的信息真实、准确、完整，没 有虚假记载、误 ...

Core Viewpoint - The company, Suotong Development (603612.SH), reported a reduction in shareholding by its controlling shareholder, Mr. Lang Guanghui, which has triggered a change in equity ownership by 1% [1] Shareholding Changes - Mr. Lang Guanghui reduced his holdings by a total of 590,000 unrestricted circulating shares from September 3 to September 4, 2025 [1] - The shareholding percentage of Mr. Lang Guanghui and his concerted parties decreased from 28.01% to 27.89% [1]

Market Overview - On September 4, the non-metal materials sector declined by 1.71% compared to the previous trading day, with Lianrui New Materials leading the drop [1] - The Shanghai Composite Index closed at 3765.88, down 1.25%, while the Shenzhen Component Index closed at 12118.7, down 2.83% [1] Stock Performance - Notable gainers in the non-metal materials sector included: - Changjiang Materials, up 10.00% to 26.40, with a trading volume of 183,900 shares and a turnover of 470 million yuan [1] - Ningxin New Materials, up 7.58% to 19.88, with a trading volume of 265,300 shares and a turnover of 528 million yuan [1] - Tianma New Materials, up 4.44% to 40.69, with a trading volume of 104,800 shares and a turnover of 419 million yuan [1] - Lianrui New Materials saw a decline of 4.45% to 50.50, with a trading volume of 74,900 shares and a turnover of 385 million yuan [2] Capital Flow - The non-metal materials sector experienced a net inflow of 147 million yuan from institutional investors, while retail investors saw a net outflow of 59.57 million yuan [2] - The capital flow for key stocks showed: - Changjiang Materials had a net inflow of 157 million yuan from institutional investors, while retail investors had a net outflow of 78.39 million yuan [3] - Lianrui New Materials had a net outflow of 17.98 million yuan from institutional investors, with a net inflow of 27.89 million yuan from retail investors [3]

Group 1 - As of September 3, the graphite electrode concept increased by 0.02%, ranking 6th among concept sectors, with 7 stocks rising, including Ningxin New Materials, Dow Technology, and Zhongke Electric, which rose by 10.79%, 9.74%, and 6.21% respectively [1] - The leading stocks in the graphite electrode sector by net inflow of main funds include Zhongke Electric with a net inflow of 218 million yuan, followed by Dow Technology, Suotong Development, and Putailai with net inflows of 179 million yuan, 53 million yuan, and 16 million yuan respectively [2][3] - The main fund inflow ratios for Huajin Co., Zhongke Electric, and Suotong Development were 9.19%, 7.63%, and 6.26% respectively, indicating strong interest in these stocks [3] Group 2 - The stocks with the largest declines in the graphite electrode sector include Better Ray, Longjiang Transportation, and Baotailong, which fell by 3.83%, 3.39%, and 2.46% respectively [1] - The overall market performance for the graphite electrode concept shows a mixed trend, with some stocks experiencing significant gains while others faced notable losses [2][4]

Market Overview - The non-metal materials sector experienced a decline of 1.57% on September 3, with Changjiang Materials leading the drop [1] - The Shanghai Composite Index closed at 3813.56, down 1.16%, while the Shenzhen Component Index closed at 12472.0, down 0.65% [1] Stock Performance - Notable gainers included Ningxin New Materials, which rose by 10.79% to a closing price of 18.48, and Tianma New Materials, which increased by 4.12% to 38.96 [1] - Conversely, Changjiang Materials fell by 5.88% to 24.00, and other stocks like Bingyang Technology and Qilu Huaxin also saw declines of 5.53% and 3.08% respectively [2] Trading Volume and Capital Flow - The non-metal materials sector saw a net inflow of 54.54 million yuan from institutional investors, while retail investors experienced a net outflow of 34.45 million yuan [2] - The trading volume for Ningxin New Materials was 234,800 hands, with a transaction value of 427 million yuan, indicating strong investor interest [1] Individual Stock Capital Flow - Key stocks such as Suotong Development and Longgao Co. had significant capital movements, with Suotong Development seeing a net inflow of 89.68 million yuan from institutional investors [3] - In contrast, Changjiang Materials had a net outflow of 9.39 million yuan from institutional investors, indicating a lack of confidence among larger investors [3]

Market Overview - The non-metal materials sector experienced a decline of 3.75% on September 2, with Lianrui New Materials leading the drop [1] - The Shanghai Composite Index closed at 3858.13, down 0.45%, while the Shenzhen Component Index closed at 12553.84, down 2.14% [1] Stock Performance - Notable gainers in the non-metal materials sector included: - Changjiang Materials: Closed at 25.50, up 2.74% with a trading volume of 246,300 shares and a turnover of 613 million yuan [1] - Bingyang Technology: Closed at 13.01, up 2.12% with a trading volume of 35,000 shares [1] - Major decliners included: - Lianrui New Materials: Closed at 53.13, down 7.16% with a trading volume of 93,600 shares and a turnover of 510 million yuan [2] - Quartz Shares: Closed at 40.04, down 4.62% with a trading volume of 199,800 shares and a turnover of 814 million yuan [2] Capital Flow - The non-metal materials sector saw a net outflow of 316 million yuan from institutional investors, while retail investors contributed a net inflow of 238 million yuan [2] - The detailed capital flow for selected stocks showed significant outflows for: - Lianrui New Materials: Net outflow of 56.86 million yuan from institutional investors [3] - Quartz Shares: Net outflow of 84.32 million yuan from institutional investors [3] - Retail investors showed a net inflow into several stocks, including: - Longgao Co.: Net inflow of 6.11 million yuan [3] - Changjiang Materials: Net inflow of 43.57 million yuan [3]

Group 1 - The graphite electrode sector saw a rise of 2.32%, ranking third among concept sectors, with 12 stocks increasing in value, including Puxin Technology, Shantai Technology, and Suotong Development reaching their daily limit [1][2] - Notable gainers included Zhongke Electric, Bettery, and China Baowu, which rose by 14.59%, 13.58%, and 3.70% respectively [1] - The sector experienced a net outflow of 0.11 billion yuan in main funds, with 8 stocks receiving net inflows, and 7 stocks seeing inflows exceeding 10 million yuan [2][3] Group 2 - The top net inflow was recorded for Suotong Development, with a net inflow of 324 million yuan, followed by Shantai Technology and Puxin Technology with net inflows of 220 million yuan and 205 million yuan respectively [2][3] - The net inflow ratios for Shantai Technology, Suotong Development, and Puxin Technology were 21.42%, 19.39%, and 11.52% respectively [3] - The stocks with the largest declines included Guomin Technology, Yong'an Pharmaceutical, and Huajin Co., which fell by 3.42%, 1.72%, and 1.50% respectively [1][4]

证券代码：603612 证券简称：索通发展 公告编号：2025-043 索通发展股份有限公司 关于 2025 年 8 月份提供担保的公告 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。 重要内容提示： （一）担保的基本情况 | | 被担保人名称 | | 山东索通创新炭材料有限公司 | | --- | --- | --- | --- | | | 本次担保金额 | 10,000.00 | 万元 | | 担保对象 一 | 实际为其提供的担保余额 | 149,067.17 | 万元（不含本次） | | | 是否在前期预计额度内 | 是 □否 | □不适用：_________ | | | 本次担保是否有反担保 被担保人名称 | □是 否 | □不适用：_________ 重庆锦旗碳素有限公司 | | 担保对象 | | | | | | 本次担保金额 | 5,000.00 | 万元 | | 二 | 实际为其提供的担保余额 | 19,660.00 | 万元（不含本次） | | | 是否在前期预计额度内 | 是 □否 | □不适用：___ ...

2025 年 9 月 1 索通发展股份有限公司 2025 年第三次临时股东会会议资料 索通发展股份有限公司 2025 年第三次临时股东会会议资料 索通发展股份有限公司 2025 年第三次临时股东会 会议资料 目录 一、2025 年第三次临时股东会参会须知 二、2025 年第三次临时股东会基本情况及会议议程 三、2025 年第三次临时股东会会议议案 关于 2025 年半年度利润分配方案的议案 2 索通发展股份有限公司 2025 年第三次临时股东会会议资料 索通发展股份有限公司 2025 年第三次临时股东会参会须知 为了维护全体股东的合法权益，确保现场股东会的正常秩序和议事效率，保 证现场会议的顺利进行，根据《公司法》《上市公司股东会规则》等有关法律法规 和《公司章程》的规定，现就索通发展股份有限公司 2025 年第三次临时股东会参 会须知明确如下： 一、为确认出席会议的股东及股东代表或其他出席者的出席资格，会议工作 人员将对出席会议者的身份进行必要的核对工作，请被核对者给予配合。 四、股东及股东代表参加股东会依法享有发言权、质询权、表决权等权利。 股东及股东代表参加股东会应认真履行其法定义务，不得侵犯公司和其他 ...

Market Overview - The non-metal materials sector increased by 1.2% on August 29, with Suotong Development leading the gains [1] - The Shanghai Composite Index closed at 3857.93, up 0.37%, while the Shenzhen Component Index closed at 12696.15, up 0.99% [1] Stock Performance - Suotong Development (603612) closed at 26.22, with a rise of 9.98% and a trading volume of 648,900 shares, amounting to a transaction value of 1.669 billion [1] - Other notable performers included Ningxin New Materials (839719) with a 2.75% increase, and Tianma New Materials (838971) with a 2.01% increase [1] - Longgao Co. (605086) experienced a decline of 1.90%, closing at 27.30 [2] Capital Flow - The non-metal materials sector saw a net inflow of 277 million in main funds, while retail investors experienced a net outflow of 117 million [2] - The main funds' net inflow for Suotong Development was 279 million, representing 16.71% of the total [3] - Longgao Co. had a significant net outflow of 11.78 million from main funds, accounting for -14.36% [3]