4J29精密膨胀合金棒材的材料参数百科 4J29 精密膨胀合金棒材以 Ni 基合金为基底，具备稳定的线性膨胀与良好尺寸稳定性，广泛应用于高精密定位腔体、微机电件与热场控制结构。以下内容聚 焦材料参数的要点，便于设计与采购对比。 材料选型误区方面，常见错误可概括为三点：一是只关注单一参数，如热膨胀系数，而忽略加工稳定性与热处理对尺寸的影响；二是以初期成本为唯一考 量，忽略可重复性、对位精度和长期寿命带来的综合成本；三是对供应链波动缺乏预案，未充分考虑 LME 与上海有色网等行情源在币种、计价单位与交期 上的差异所带来的价格波动。把握这些误区，需以材料参数为核心，结合实际工艺路线、热处理工艺、检验方法与供应链风控进行综合判断。 技术争议点设一个广泛讨论的焦点：4J29 的热膨胀系数随温度的非线性变化是否会在极端高温场景中放大尺寸误差，从而影响长期定位精度？支持方强调 通过优化热处理工艺与后续微调来减小非线性波动，另一方则认为在特定工作温区外应选用更具线性响应的同类材料或采取机械补偿方案。此议题在设计阶 段通常通过热-力耦合仿真、现场试验与长期老化测试来获得判断。 行情数据方面，采购端常用的行情源包含 LME 与上 ...

Core Viewpoint - The incident involving Shanghai Lujie Industrial Development Co., Ltd. highlights the limitations of traditional supplier management methods in large-scale catering services, particularly in ensuring food safety [1][7]. Group 1: Incident Overview - On September 15, a student in Shanghai experienced vomiting after consuming a lunch item, shrimp and egg stir-fry, which was reported to have a foul smell [3]. - Multiple schools in Shanghai withdrew the shrimp and egg stir-fry from their menus, with the supplier, Shanghai Lujie, claiming that not all batches had issues, while parents received notifications indicating safety concerns [3][5]. - The company serves over 500 schools and kindergartens in Shanghai, providing more than 500,000 meals daily [3][5]. Group 2: Supplier Background - Shanghai Lujie Industrial Development Co., Ltd. has been in operation for over 20 years and is a significant supplier of student nutrition lunches in Shanghai [5]. - The company claims to prioritize food safety and quality, holding various accolades such as being a Shanghai famous brand and a top enterprise in national commercial quality awards [5]. Group 3: Limitations of Traditional Supplier Management - The incident reveals that having complete qualifications and certifications does not guarantee control over the food supply process [7]. - Traditional supplier management focuses on document verification and periodic inspections, which can lead to outdated information and insufficient monitoring of dynamic factors affecting food quality [7]. Group 4: Modern Supply Chain Risk Management - Some large enterprises are adopting digital tools for supplier risk management, utilizing big data and AI to enhance supply chain oversight [8]. - Tools like Qichacha can provide real-time monitoring of suppliers' operational anomalies and legal issues, allowing for proactive risk management [8][9]. - Effective risk management in the supply chain requires a comprehensive approach that integrates supplier qualifications, operational dynamics, and consumer feedback to ensure food safety, especially in high-risk scenarios like student meals [10].

Core Viewpoint - The legal dispute between Shenzhen Zhuoyue Technology Co., Ltd. and Jiangmen Roma Technology Co., Ltd. has raised concerns in the 3C industry supply chain, with a total claim amounting to 136 million yuan due to unpaid debts and contract breaches [1][2]. Group 1: Company Specifics - Shenzhen Zhuoyue Zhizao, a wholly-owned subsidiary of Zhuoyue Technology, has filed a lawsuit against Jiangmen Roma and five other companies for a total of 136 million yuan, which includes unpaid product payments and associated losses [1][2]. - Roma Technology has faced significant operational challenges, including a recall of 491,700 defective products and a six-month production halt due to safety issues, leading to a drastic drop in sales and monthly revenue losses exceeding 100 million yuan [2]. - Zhuoyue Technology has reported cumulative losses exceeding 1.5 billion yuan from 2020 to 2024, with unrecouped losses of 1.4 billion yuan in 2024, exacerbated by the 136 million yuan owed by Roma [2]. Group 2: Industry Implications - The crisis highlights the critical importance of product safety for brand owners, as Roma's quality issues have triggered a chain reaction affecting the entire supply chain [5]. - Suppliers are urged to establish customer credit assessment mechanisms to avoid over-reliance on a single client, emphasizing the need for risk-sharing mechanisms within the supply chain to mitigate losses during unforeseen events [5]. - The financial impact on listed company Chuangyitong, which has also been affected by Roma's unpaid debts, includes a credit impairment loss of 7.86 million yuan and inventory write-downs totaling 3.15 million yuan, significantly affecting its profitability [3][4].

Core Viewpoint - Shenzhen Zhuoyue Technology Co., Ltd. is facing a lawsuit involving its subsidiary Zhuoyue Intelligent Manufacturing Co., Ltd. against Jiangmen Roma Technology Co., Ltd. and five other companies over a contract dispute, with the total amount in question reaching 136 million yuan [2][3]. Group 1: Legal and Financial Implications - Zhuoyue Intelligent Manufacturing is claiming 80.08 million yuan in unpaid product payments and additional losses totaling 55.36 million yuan, including various fees and costs related to the contract [3]. - The lawsuit involves six related companies that are liable for the debts of Jiangmen Roma, with the total claim amounting to 136 million yuan [3]. - The financial strain on Zhuoyue is exacerbated by its cumulative losses exceeding 1.5 billion yuan from 2020 to 2024, with unrecouped losses of 1.4 billion yuan in 2024 alone [4]. Group 2: Industry Impact and Brand Crisis - Roma Technology has faced a significant brand crisis since June 2025 due to multiple incidents of power bank fires, leading to a drastic drop in sales and a monthly revenue loss exceeding 100 million yuan [4]. - The crisis has resulted in Roma recalling 491,700 defective products, causing further disruptions in e-commerce and aviation sectors, ultimately leading to a six-month production halt [4]. - Other companies, such as Chuangyitong, are also affected by Roma's failure to pay, with reported receivables exceeding 15.63 million yuan, which has led to credit impairment losses and inventory write-downs [6][7]. Group 3: Industry Lessons and Risk Management - The case highlights two critical issues in the 3C industry: the necessity for product safety and the importance of establishing customer credit assessment mechanisms to avoid over-reliance on single clients [8]. - There is a growing consensus in the industry on the need for a risk-sharing mechanism across the supply chain to mitigate losses during unforeseen events [8].

Core Viewpoint - The event "Walking into Xiangyu and Going to Vietnam" aims to enhance Xiamen enterprises' understanding of the investment environment, legal risks, and supply chain risk management strategies in Vietnam, facilitating their overseas market expansion and improving supply chain risk governance capabilities [1][4]. Group 1: Event Overview - The first session of the "Maritime Silk Road Supply Chain Legal Service Matching Conference" was held in Xiamen, focusing on Vietnam investment [1][2]. - The event included thematic sharing, case analysis, and on-site visits to connect legal resources with enterprise needs [1][4]. Group 2: Government and Institutional Support - Xiamen's Maritime Silk Road Legal Affairs Office, State-owned Assets Supervision and Administration Commission, and Commerce Bureau have actively responded to the city's initiative to build a global supply chain innovation center [1][5]. - The establishment of the Supply Chain Legal and Risk Governance Special Committee aims to promote legal services for supply chain enterprises going overseas [2][6]. Group 3: Insights and Presentations - Representatives from Xiangyu shared their risk management system and experiences in overseas markets [4]. - A Vietnamese logistics and industrial park developer presented the investment environment, advantages of industrial parks, and relevant tax policies in Vietnam [4]. - Legal experts discussed unavoidable legal issues for enterprises investing in Vietnam, emphasizing the importance of legal due diligence [4]. Group 4: Future Directions - The event is seen as a starting point for continuous support and collaboration among members of the Supply Chain Legal and Risk Governance Special Committee [5]. - The focus will be on integrating legal services with business resources to benefit more supply chain enterprises and contribute to the high-quality development of Xiamen's supply chain industry [5].

Core Insights - The company reported a revenue of 143.77 billion yuan for Q1 2025, a year-on-year increase of 9.47%, while the net profit attributable to shareholders was 584 million yuan, a decrease of 3.29% [1] - The supply chain business showed robust growth with revenues of 129.34 billion yuan, up 5.47% year-on-year, and a net profit of 848 million yuan, an increase of 9.72% [1] - The real estate segment demonstrated resilience with revenues of 12.81 billion yuan, a significant increase of 94.40% year-on-year, although net profit was negative at -91 million yuan due to the absence of asset sale gains [2] Supply Chain Business - The supply chain business achieved a revenue of 129.34 billion yuan, reflecting a year-on-year growth of 5.47% [1] - The net profit for the supply chain segment was 848 million yuan, which is an increase of 9.72% compared to the previous year [1] - The growth in this segment was primarily driven by increased profits from pulp and paper as well as certain mineral operations [1] Real Estate Business - The real estate business generated revenues of 12.81 billion yuan, marking a year-on-year increase of 94.40% [2] - The net profit for the real estate segment was -91 million yuan, a decrease of 34 million yuan year-on-year, largely due to the lack of asset sale investment gains in the current period [2] - The subsidiary, Jianfa Real Estate, reported sales of 32 billion yuan, a 2% increase year-on-year, while the land acquisition amount was 20.7 billion yuan, ranking fourth in the industry [2] Home Furnishing Business - The home furnishing segment faced challenges, with revenues of 1.62 billion yuan, a decline of 23.49% year-on-year [2] - The net profit for this segment was -172 million yuan, a decrease of 61 million yuan compared to the previous year, impacted by external factors and increased losses from fair value changes in investment properties [2] Investment Outlook - The company forecasts revenues of 715.75 billion yuan, 728.70 billion yuan, and 743.93 billion yuan for 2025-2027, with year-on-year growth rates of 2.06%, 1.81%, and 2.09% respectively [3] - Expected net profits for the same period are projected to be 3.447 billion yuan, 3.976 billion yuan, and 4.400 billion yuan, with growth rates of 17.01%, 15.34%, and 10.68% [3] - The company maintains a strong risk control capability in its supply chain and a proactive approach in real estate sales, anticipating continued growth in non-recurring earnings [3]