Core Viewpoint - The article discusses regulatory actions taken by the Shenzhen Stock Exchange against Huimang Microelectronics (Shenzhen) Co., Ltd. and its associated parties, including criticism of their financial disclosures and internal controls related to their IPO application [1][2][4]. Group 1: Regulatory Actions - On June 6, 2025, the Shenzhen Stock Exchange issued regulatory letters to Citic Securities Co., Ltd. and Dahua Certified Public Accountants, as well as public criticism against Huimang Microelectronics and its key personnel [1][3]. - Huimang Microelectronics had previously applied for an IPO on the Sci-Tech Innovation Board but withdrew its application after being selected for an on-site inspection [2][4]. Group 2: Violations Identified - Huimang Microelectronics reported that its distribution revenue accounted for 91.37%, 94.58%, 95.85%, and 96.78% of its main business income during the reporting periods, but failed to adequately disclose issues with internal controls over this revenue [4][8]. - The company did not accurately disclose the production cycle of its products, which was stated to be approximately six months, but some products took significantly longer, affecting inventory valuation assessments [4][8]. Group 3: Responsibilities of Underwriters and Auditors - Citic Securities and Dahua Certified Public Accountants failed to conduct sufficient due diligence on Huimang Microelectronics' internal controls and financial disclosures, leading to inaccurate audit opinions [11][18]. - The underwriters did not adequately investigate abnormal large fund flows between the issuer and its major suppliers, nor did they take sufficient alternative verification measures [5][20]. Group 4: Consequences and Recommendations - The Shenzhen Stock Exchange decided to issue public criticism against Huimang Microelectronics and its executives for failing to ensure the accuracy and completeness of their IPO application documents [7][22]. - Citic Securities and Dahua Certified Public Accountants were both warned to improve their practices and ensure compliance with relevant regulations in future engagements [14][21].

Core Viewpoint - Shenzhen Stock Exchange has imposed disciplinary actions against Guotai Haitong Securities Co., Ltd. and related parties due to significant internal control deficiencies and inaccurate audit opinions regarding the financial information of Zhongding Hengsheng Gas Equipment (Wuhu) Co., Ltd. during its IPO process [1][11]. Group 1: Internal Control Deficiencies - The issuer, Zhongding Hengsheng, exhibited major internal control deficiencies, failing to adequately verify the reliability of financial information, leading to inaccurate audit opinions [1][3]. - The financial data discrepancies were significant, with asset total and net asset differences of 43% and 36% respectively for 2020, and revenue and net profit differences of 20% and 24% [2][3]. Group 2: R&D Expense Control Issues - The issuer did not sufficiently verify the effectiveness of internal controls over R&D expenses, with discrepancies in R&D project documentation and improper handling of R&D materials [4][5]. - In 2022, the issuer reported R&D expenses of 12.21 million yuan, but the internal controls were found to be non-compliant [4]. Group 3: Revenue Recognition Problems - The issuer's revenue recognition practices were found to be non-compliant, with instances of recognizing revenue before the complete delivery of products [6][7]. - The main product sales revenue for the reporting period exceeded 90% of total revenue, yet the basis for revenue recognition was deemed insufficient [6]. Group 4: Misuse of Funds by Actual Controllers - The actual controllers of the issuer misappropriated 67.54 million yuan for personal investments, with inadequate tracking of the funds' flow and usage [7][8]. - The investigation revealed that the controllers' fund usage was not properly scrutinized, leading to a lack of transparency [7]. Group 5: Disciplinary Actions - Guotai Haitong and its representatives received a six-month ban from signing any IPO application documents due to their failure to comply with regulatory requirements [11][12]. - The accounting firm, Rongcheng CPA, and its signing accountants also faced similar disciplinary actions for their inadequate audit practices [12][13].