在上市委会议现场，关于经营稳定性与业绩可持续性，上市委要求通宝光电说明与主要客户合作的稳定 性与可持续性，应对客户较为集中风险的措施及有效性；说明主要客户对公司实施"年降"政策对公司未 来业绩可能产生的影响。 另外，关于存货管理，上市委要求通宝光电说明存货"寄售仓"模式中发出商品管理及存货内部控制的有 效性。 北京商报讯（记者 马换换 李佳雪）11月13日晚间，北交所官网显示，常州通宝光电股份有限公司（以 下简称"通宝光电"）IPO当日上会获得通过。 据了解，通宝光电定位于汽车电子零部件制造商，主营业务为汽车照明系统、电子控制系统、能源管理 系统等汽车电子零部件的研发、生产和销售。公司IPO于2025年4月27日获得受理，当年5月28日进入问 询阶段。公司此次冲击上市拟募集资金3.3亿元。 ...

Core Viewpoint - Changzhou Tongbao Optoelectronics Co., Ltd. (referred to as "Tongbao Optoelectronics") has initiated its third IPO journey on the Beijing Stock Exchange, raising concerns about its heavy reliance on its largest customer, SAIC-GM Wuling, which has reached 83.35% of its sales in 2024 [1][7][10]. Group 1: IPO Attempts and Challenges - Tongbao Optoelectronics has attempted to go public three times since 2017, changing its underwriting broker each time, which raises questions about underlying issues preventing a successful IPO [1][4]. - The company has faced significant challenges, including a failed IPO attempt in 2018 and another in 2023, with the latest attempt being supported by Dongwu Securities [5][6]. - The company’s IPO counseling approval is nearing expiration, adding pressure to its current attempt to list on the Beijing Stock Exchange [6]. Group 2: Customer Dependency - The company's revenue heavily depends on SAIC-GM Wuling, with sales to this customer accounting for 66.83%, 63.99%, and 83.35% of total revenue from 2022 to 2024, respectively [7][10]. - The concentration of revenue from a single customer raises concerns about the company's operational independence, as it is perceived to be functioning almost as a "processing plant" for SAIC-GM Wuling [10]. - Compared to industry peers, Tongbao Optoelectronics exhibits a significantly higher customer concentration, with no comparable company having over 67% revenue dependency on a single customer [8]. Group 3: Competitive Landscape - Notably, Huayu Vision, which is both a major customer and supplier, poses a unique challenge as it is also a competitor in the automotive lighting sector [11][15]. - The sales revenue from Huayu Vision has increased significantly, indicating a complex relationship where the company is both reliant on and competing with its suppliers [12][14]. - The dual role of Huayu Vision as a customer and supplier raises questions about the sustainability and rationality of such business relationships [14].