Core Insights - The electronic chemicals sector experienced a 2.17% increase on December 8, with Weiteou leading the gains [1] - The Shanghai Composite Index closed at 3924.08, up 0.54%, while the Shenzhen Component Index closed at 13329.99, up 1.39% [1] Stock Performance - Weiteou (6ISTOR) closed at 47.34, up 9.13% with a trading volume of 71,100 shares and a transaction value of 327 million yuan [1] - Zhongshi Technology (300684) closed at 45.20, up 7.93% with a trading volume of 297,200 shares and a transaction value of 1.332 billion yuan [1] - Guanghua Technology (002741) closed at 22.50, up 6.03% with a trading volume of 283,200 shares and a transaction value of 628 million yuan [1] - Six other companies in the sector also reported gains, with varying percentages and trading volumes [1] Capital Flow - The electronic chemicals sector saw a net inflow of 183 million yuan from institutional investors, while retail investors experienced a net outflow of approximately 26.96 million yuan [3]

Core Viewpoint - Hongchang Electronics announced a change in its auditing firm for the 2025 fiscal year, appointing new certified public accountants due to internal adjustments at the firm [1] Group 1 - Tianzhi International Accounting Firm was originally assigned to audit Hongchang Electronics for the 2025 fiscal year [1] - The initial certified public accountants assigned were Yan Yanfei and Chen Tinghong [1] - The new certified public accountants appointed are Mai Jianqing and Wang Zixia [1]

证券代码：603002 证券简称：宏昌电子 公告编号：2025-043 宏昌电子材料股份有限公司 关于变更签字注册会计师的公告 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个别及连带责任。 近日,公司收到天职国际会计师事务所（特殊普通合伙）《关于签字会计师变 更的说明》。现将相关变更情况公告如下： 一、签字注册会计师变更情况 天职国际会计师事务所（特殊普通合伙）作为公司 2025 年度审计机构，原 指派颜艳飞、陈廷洪作为签字注册会计师为公司提供 2025 年度审计服务。因天 职国际内部工作调整，为按时完成公司 2025 年度审计工作，更好的配合公司 2025 年度信息披露工作，原指派的颜艳飞、陈廷洪不再担任公司 2025 年度签字注册 会计师，现指派麦剑青、王紫霞担任公司 2025 年度签字注册会计师。 二、本次变更的签字注册会计师信息 1、基本情况 1 项目合伙人及签字注册会计师 1：麦剑青，2008 年成为注册会计师，2005 年 开始从事上市公司审计，2013 年开始在天职国际执业，2025 年开始为本公司提 供审计服务，近三年 ...

Core Viewpoint - The electronic chemicals sector experienced a significant decline, with a drop of 3.46% on November 21, led by a notable decrease in Siquan New Materials, which fell by 10.18% [1][2]. Market Performance - The Shanghai Composite Index closed at 3834.89, down 2.45%, while the Shenzhen Component Index closed at 12538.07, down 3.41% [1]. - The electronic chemicals sector saw various individual stock performances, with Shanghai Xinyang increasing by 3.20% and Siquan New Materials decreasing by 10.18% [1][2]. Trading Volume and Capital Flow - The electronic chemicals sector had a net outflow of 800 million yuan from institutional investors, while retail investors saw a net inflow of 560 million yuan [2]. - The trading volume for key stocks included Shanghai Xinyang with 208,700 shares and Siquan New Materials with 67,400 shares [1][2]. Individual Stock Highlights - Notable declines included: - Siquan New Materials: 160.61 yuan, down 10.18%, with a trading volume of 67,400 shares and a turnover of 1.112 billion yuan [2]. - Hongchang Electronics: 7.01 yuan, down 10.01%, with a trading volume of 940,400 shares and a turnover of 677 million yuan [2]. - Positive performers included: - Shanghai Xinyang: 58.30 yuan, up 3.20%, with a trading volume of 208,700 shares [1]. Capital Flow Analysis - The capital flow analysis indicated that: - Nanda Optoelectronics had a net inflow of 82.65 million yuan from institutional investors, while retail investors had a net outflow of 29.20 million yuan [3]. - Xilong Science saw a net inflow of 32.24 million yuan from institutional investors, with retail investors experiencing a net outflow of 21.41 million yuan [3].

Core Viewpoint - The computing hardware stocks have shown strong performance, with several companies experiencing significant gains in their stock prices as of November 20 [1] Group 1: Company Performance - Hongchang Electronics reached the daily limit increase in stock price [1] - Zhongfu Circuit and Founder Technology also reported notable stock price increases [1] - Zhongji Xuchuang was among the top gainers in the sector [1]

Group 1 - The company, Hongchang Electronics, stated that as of the end of Q3 2025, the total number of common stock shareholders will be 53,599 [1]

Core Insights - Hongchang Electronics announced on November 18 that it has acquired Wuxi Hongren's copper-clad laminate business, which allows the company to extend its business chain and enhance its market competitiveness and risk resistance [2] Group 1 - The acquisition of Wuxi Hongren's copper-clad laminate business enables the company to create synergy between its epoxy resin and copper-clad laminate operations [2] - This strategic move is aimed at expanding the existing business scale and driving dual main business operations [2]

Core Viewpoint - Hongchang Electronics has established a long-term and stable cooperative relationship with Huibei Company, becoming its main supplier of electronic-grade epoxy resin, based on mutual benefit and actual needs [1] Group 1 - Hongchang Electronics specializes in the production of electronic-grade epoxy resin [1] - Huibei Company is a demand enterprise for epoxy resin products [1] - The cooperation between the two companies is based on mutual benefit and actual needs [1]

Market Overview - The electronic chemicals sector experienced a decline of 1.71% on November 12, with Huate Gas leading the drop [1] - The Shanghai Composite Index closed at 4000.14, down 0.07%, while the Shenzhen Component Index closed at 13240.62, down 0.36% [1] Stock Performance - Notable gainers in the electronic chemicals sector included: - Sanhu Xinke (688359) with a closing price of 78.40, up 3.43% [1] - Kaihua Materials (920526) at 26.17, up 1.87% [1] - Xingfu Electronics (688545) at 37.73, up 0.96% [1] - Major decliners included: - Huate Gas (688268) at 61.36, down 4.26% [2] - Nanda Optoelectronics (300346) at 36.98, down 4.07% [2] - Jinhong Gas (688106) at 21.16, down 3.56% [2] Trading Volume and Capital Flow - The electronic chemicals sector saw a net outflow of 748 million yuan from institutional investors, while retail investors had a net inflow of 712 million yuan [2] - The trading volume for key stocks included: - Sanhu Xinke with a volume of 29,400 hands and a transaction value of 229 million yuan [1] - Nanda Optoelectronics with a volume of 299,600 hands and a transaction value of 1.116 billion yuan [2] Capital Inflow Analysis - Key stocks with significant capital inflow included: - Sanhu Xinke with a net inflow of 37.08 million yuan from institutional investors [3] - Xingfu Electronics with a net inflow of 11.43 million yuan from institutional investors [3] - Stocks with notable outflows included: - Huate Gas with a net outflow of 4.14 million yuan from institutional investors [3] - Jinhong Gas with a net outflow of 4.14 million yuan from institutional investors [3]

Group 1 - The Nvidia concept sector experienced a decline of 1.78% on November 7 [1] - Among the companies, Hongchang Electronics fell by 2.66% [1] - Industrial Fulian decreased by 2.65% [1] - Digital China saw a drop of 1.67% [1]