Summary of Junsheng Electronics Q1 2025 Earnings Call Company Overview - **Company**: Junsheng Electronics - **Date**: Q1 2025 Earnings Call Key Financial Metrics - **Revenue**: Approximately 14.6 billion CNY, a year-on-year increase of 9.78% [2][4] - **Net Profit**: Approximately 340 million CNY, a year-on-year increase of 11.1%, but lower than the growth rate of gross margin due to increased R&D and other expenses [2][6] - **Gross Margin**: Overall gross margin improved by 2.6 percentage points to 17.9% [2][5] - **Cash Flow**: Operating cash flow improved with a net inflow of 870 million CNY, an increase of 170 million CNY year-on-year [2][8] Business Segments Performance - **Automotive Safety**: Contributed approximately 9.2 billion CNY to revenue, with a gross margin increase of 1.9 percentage points to 15.6% [2][4][21] - **Automotive Electronics**: Contributed approximately 4 billion CNY, with a gross margin increase of 2 percentage points to 21.2% [2][4][5] - **Xiangshan Co.**: As an independent listed company, contributed approximately 1.4 billion CNY [2][4] Cost Management and Efficiency - Significant cost reduction and efficiency improvements since 2022, leading to enhanced gross margins [2][5] - R&D expenses increased by 93 million CNY year-on-year, primarily due to new project orders entering R&D and production phases [2][7] Order and Market Dynamics - **New Orders**: As of the end of Q1, the company secured new orders worth approximately 15.7 billion CNY, covering both domestic and international brands [2][12] - **Global Automotive Market**: Q1 2025 global light vehicle production was approximately 21.72 million units, a year-on-year increase of 1.3% [3] Strategic Developments - Continued innovation in smart driving technology and product development, with new orders from both overseas brands and leading domestic companies [2][16] - Showcased new technologies at the Shanghai Auto Show, including the ASpace+ immersive smart cockpit and various robotic components [2][13] Industry Trends and Outlook - The automotive industry is focusing on electrification and intelligence, with significant developments in both domestic and overseas markets [2][18] - The company is adopting a "in China for global" strategy to integrate local innovations with global market needs [2][18] Challenges and Risks - Increased competition in the Asian market, particularly in the automotive safety segment [2][21] - Potential impacts from tariffs and geopolitical tensions, although Q1 2025 showed no significant effects [2][19][20] Future Projections - The company aims to control R&D expenses within budget levels while maintaining gross margin and net profit targets [2][27] - Anticipates continued growth in smart cockpit and robotic product lines, with ongoing communication with clients to adapt to market needs [2][25][23] Conclusion Junsheng Electronics demonstrated solid financial performance in Q1 2025, with significant improvements in revenue and gross margins. The company is strategically positioned to leverage its innovations in smart driving and robotics while navigating industry challenges and market dynamics.

Summary of Conference Call Notes Company and Industry Overview - **Company**: 双环传动 (Shuanghuan Transmission) - **Industry**: Gear manufacturing, particularly focusing on the automotive sector, including traditional fuel vehicles and electric vehicles Key Points and Arguments Revenue and Growth - **Electric Vehicle Gear Business**: Revenue share reached over 41% in Q1 2025, with a year-on-year growth exceeding 50% [2][4] - **Traditional Fuel Vehicle Gear Business**: Revenue declined by approximately 5% year-on-year in Q1 2025 [2][4] - **Commercial Vehicle Business**: Gradual recovery noted, but still a drag on overall performance [2][7] - **Overall Revenue**: 2024 revenue was 8.148 billion yuan, with a growth rate of 18.46% [3] Product Performance - **Intelligent Actuator Business**: Expected growth rate over 69% in 2024, contributing over 9% to total revenue [4][6] - **Coaxial Reducer**: Monthly production capacity of 60,000 units, with strong domestic demand despite poor performance in the European market [2][5] Market Potential - **Global Gear Market Size**: Estimated at 600 billion yuan globally, with the Chinese market around 300 billion yuan [10][11] - **Emerging Applications**: Significant growth potential in new applications such as robotic vacuum cleaners [11] Manufacturing and Supply Chain - **Hungary Factory**: Production team handed over in April 2025, expected to generate revenue in the second half of the year, with profitability anticipated by 2026 at the earliest [9][23] - **Local Production Strategy**: Emphasis on localizing supply chains to mitigate risks associated with international trade [20][22] Competitive Landscape - **Competition in Coaxial Reducers**: Increased competition from leading companies and OEMs, necessitating a focus on high-quality, differentiated products [17] - **Response to New Competitors**: Company remains confident in its ability to maintain market share through innovation and cost control [26][27] Future Outlook - **Revenue Growth Guidance for 2025**: Focus on core gear technology and diversification, with expectations for continued rapid growth in electric vehicle gear and intelligent actuator segments [24] - **Single Vehicle Value**: Current value exceeds 1,000 yuan per vehicle, with expectations for further increases due to rising demand for intelligent applications [25] Additional Important Insights - **Cost Management**: Company is actively working on domestic equipment validation to enhance production efficiency and reduce costs [13] - **Commercial Vehicle Market Outlook**: Optimistic about the heavy-duty and new energy commercial vehicle markets, with ongoing efforts to secure major client orders [14][15] - **Technological Innovation**: Strong emphasis on R&D capabilities to meet specific customer needs, particularly in the robotic vacuum cleaner segment [31] This summary encapsulates the key insights from the conference call, highlighting the company's performance, market potential, competitive landscape, and future outlook in the gear manufacturing industry.

Summary of Opple Lighting Conference Call Company Overview - **Company**: Opple Lighting - **Fiscal Year**: 2024 - **Key Financials**: - Gross Margin: 39.3% - Net Profit: 903 million CNY, down 2% YoY - Revenue: 7.1 billion CNY, down 9% YoY [2][3] Core Insights and Arguments - **Business Performance**: - Home lighting business declined by 5%, while sales of whole-house smart lighting solutions grew over 40% [2][3] - Commercial lighting business faced a nearly 30% decline due to economic impacts, but project-type business maintained growth [2][3] - E-commerce sales saw a double-digit decline, while commercial lighting showed slight growth [2][4] - **Future Outlook**: - For Q1 2025, revenue slightly declined, but profit increased [4] - The company aims for a revenue growth of 5%-10% while maintaining gross and net profit margins [4] - Focus on technological and solution innovation, including new product launches [4] - **Government Subsidies**: - National subsidy policies had a limited but positive impact on sales due to diverse product categories and average transaction prices [2][5] - The company is exploring how offline distributors can leverage subsidies to boost sales [5] - **Gross Margin Pressure**: - Expected pressure on gross margin in H2 2024 and Q1 2025 due to terminal pricing factors [2][6] - Offline retail and commercial channels experienced margin declines, while other channels remained stable [6][7] - **Investment and Other Income**: - Other income increased due to government incentives and bank investment returns [2][8] - Investment income may decline slightly due to lower bank interest rates [8] Additional Important Insights - **Employee Count**: - Reduction in employee numbers due to macroeconomic pressures and AI applications replacing certain roles [3][10] - **Channel Performance**: - Revenue distribution: B2C offline (45%), B2B offline (25%), e-commerce (20%), overseas (10%) [3][14] - E-commerce faces intense competition, leading to a need for increased channel support [19] - **Inventory and Cash Flow**: - Inventory turnover days have increased due to slower payment speeds from major platforms [21] - Stock levels are expected to remain stable, with inventory turnover within 60 days [22] - **Market Trends**: - The recovery of the second-hand housing market is expected to positively impact sales of high-end products [23][24] - The company holds an estimated 8% market share in the home lighting sector, which is valued between 500 billion to 600 billion CNY [25] - **R&D and Innovation**: - Continued investment in R&D, focusing on smart lighting solutions and partnerships with universities [26] - The company aims to enhance its product offerings and market presence through innovation [26] - **M&A Strategy**: - The company is exploring M&A opportunities in the commercial lighting sector, focusing on acquiring benchmark enterprises with strong brands and solutions [27][31] This summary encapsulates the key points from the conference call, highlighting the company's performance, strategic outlook, and market dynamics.

Summary of the Conference Call for Xinjubang Company Overview - **Company**: Xinjubang - **Industry**: Lithium battery materials, fluorochemical products, capacitor chemicals Key Points and Arguments 1. Sales and Revenue Performance - In Q1 2025, Xinjubang achieved revenue of 2.002 billion yuan, a year-on-year increase of 32.14% [3] - Net profit attributable to shareholders was 230 million yuan, up 39.3% year-on-year [3] - Lithium battery business saw a significant sales increase of approximately 70-80% year-on-year, although overall revenue was pressured by price declines [2][5] 2. Growth Drivers - The main growth drivers were fluorochemical products and capacitor chemicals, both achieving double-digit growth in sales and profit contributions [2][6] - The semiconductor and cosmetics sectors performed well, albeit from a smaller base [2][6] 3. International Sales and Market Strategy - Overseas sales accounted for approximately 20-30% of electrolyte sales, with significant contributions from fluorochemical and capacitor chemicals [10][12] - The company exports primarily through its European factory in Poland, mitigating short-term tariff impacts [5][10] - The Malaysian factory is in the planning stage, with a construction period of about two years, and will adjust its pace based on market demand [10] 4. Product Development and Market Position - Following 3M's exit from the market, there may be inventory accumulation among downstream customers for organic fluorine products [7] - The company is expanding its product range, including cooling and cleaning products, to drive business growth [7][8] 5. Price Stability and Market Outlook - Current prices for fluorinated liquids are stable, with short-term price declines unlikely due to the slowdown in wafer factory growth [12] - Long-term trends suggest gradual price decreases as production increases [12] 6. Future Performance Expectations - The company aims for a profit target of 1.1 billion yuan for 2025, with expectations for better performance in the second half of the year [4][15] - The company maintains an optimistic outlook for the fluorochemical sector, which is less affected by tariff policies [4][15] 7. Challenges and Risks - The potential impact of U.S. tariffs on electrolyte exports remains uncertain, although currently manageable [13][20] - The company is closely monitoring the evolving market conditions and regulatory environment, particularly regarding environmental regulations affecting competitors like 3M [11][16] 8. Strategic Collaborations and Innovations - The capacitor chemicals business is expected to remain a core growth pillar, supported by leading technology and stable quality [3][21] - Ongoing R&D collaborations, such as with Jianghai for MLCC conductive polymer materials, are still in the development phase [21] 9. Stock Incentive Plans - The company confirmed stock incentive expenses for 2023 and plans to allocate approximately 60 million yuan for the new incentive plan starting in May 2025 [19] 10. Overall Market Position - Xinjubang's performance shows resilience compared to peers, with stable growth in fluorochemical and capacitor businesses despite challenges in electrolyte profitability [22] This summary encapsulates the key insights from the conference call, highlighting the company's performance, growth strategies, market dynamics, and future outlook.

辰安科技 20250429 摘要 • 辰安科技聚焦城市安全、应急管理和装备与科技消防三大业务板块，受益 于政策支持和市场需求，在安徽、北京、宁夏、河北等地落地多个大型项 目。 • 公司通过加强应收账款管理，经营活动产生的现金流净额显著提升，同比 增长超过 70%，财务状况明显改善，为全年发展奠定基础。 • 2025 年一季度，公司营收同比增长 55%以上，归母净利润减亏超过 40%，经营性现金流净额同比增长 140%，财务数据表现良好。 • 受益于积极的财政政策，特别是城市地下管网更新改造及智慧化改造等项 目，公司牵头设计和申报方案，预计签约进度集中在第三、第四季度。 • 科达利安空天一体化智能灭火平台，包括无人机和四足机器狗等特种消防 装备，已在多地申报国债用于新型设备应用范畴，协同作战能力显著。 • 公司联合中国电信发布星辰大模型，专注于公共安全领域，并已嵌入软件 系统和产品，部署在应急管理部及多个省厅项目，AI 应用加速落地。 • 受益于两新一重特别国债政策，公司作为应急安全龙头企业订单增长明显， 协同灭火无人机和机器狗获得相关部门表扬，市场表现显现拐点迹象。 Q&A 请介绍长阳科技 2024 年的年报 ...

Summary of Guanghong Technology Conference Call Company Overview - **Company**: Guanghong Technology - **Industry**: Consumer Electronics and Automotive Electronics Key Points Financial Performance - In 2024, Guanghong Technology reported a net profit of 276 million yuan, a decline compared to 2023, primarily due to weak orders in Q2 and Q3, but a recovery to 127 million yuan in Q4 [2][3] - For Q1 2025, revenue was 1.19 billion yuan, showing a year-on-year decline, with net profit around 35 million yuan, attributed to reduced performance from the Indian subsidiary [2][3] Business Structure and Growth - The company's business structure is shifting, with consumer electronics accounting for approximately 68% and automotive electronics rising to 23%, expected to exceed 30% in 2025 [2][3] - Guanghong Technology aims for over 25% growth in revenue and net profit for 2025 [2][5] International Operations - Orders from the Indian subsidiary are expected to recover in Q2 2025, while the Vietnam factory has become profitable with anticipated significant order increases [2][4] - The company is pursuing the acquisition of French company AC to expand its European manufacturing base and automotive electronics business, mitigating tariff risks [2][5] Seasonal Trends and Market Dynamics - The consumer electronics industry experiences significant seasonal fluctuations, with Q4 typically being the strongest quarter for Guanghong Technology due to high production rates and demand spikes from various holidays [2][6] - In Q1 2025, consumer electronics represented about 60% of revenue, while automotive electronics accounted for around 25% [2][7] Acquisition of AC Company - The acquisition of AC will maintain its independent operations while enhancing synergy, with AC's clients primarily from Europe and North America, providing advantages in business communication and chip procurement [2][9] - AC's revenue is expected to be integrated into Guanghong's financials post-acquisition, with AC's annual revenue around 3 billion yuan [10][11] Market Challenges and Strategies - The Indian market faces challenges due to political factors and subsidy policies, leading to a cautious approach towards expansion [4][16][17] - Guanghong Technology is diversifying risks by accelerating the AC acquisition and establishing overseas factories to navigate international uncertainties [19] Future Outlook - The company is optimistic about Q2 and Q3 2025 orders, with expectations of a strong performance in Q4, potentially leading to significant annual growth [5][23] - Automotive electronics are projected to grow by 30% to 50% in 2025, with major clients including Huawei [24] New Business Directions - Guanghong Technology is exploring new products in the fields of renewable energy and computing power, which are expected to become significant growth areas [26][27] - The company is also looking to enhance its position in the smart wearable market, although it currently has limited involvement [28] Strategic Vision - The company aims to strengthen its global presence and increase investment in non-mobile business sectors, with a focus on becoming a leading EMS provider [29][30] Investor Relations - Guanghong Technology encourages investors to maintain confidence and stay updated on company developments [33]

Summary of the Conference Call for Jinghe Integrated Circuit Company Overview - **Company**: Jinghe Integrated Circuit - **Industry**: Semiconductor manufacturing, specifically focusing on integrated circuits (ICs) and related technologies Key Financial Metrics - **Q1 2025 Revenue**: 2.57 billion CNY, a year-on-year increase of approximately 15% [2][3] - **Net Profit**: Approximately 135 million CNY for Q1 2025, showing significant growth [2][3] - **Cash Flow**: Net cash inflow close to 600 million CNY in Q1 2025 [2][3] - **Gross Margin**: Increased to 27% in Q1 2025, with an expected range of 25%-27% for the full year [2][13] Capacity Expansion Plans - **Current Capacity**: Approximately 138,000 wafers, fully loaded [7] - **Planned Capacity for 2025**: Increase to between 165,000 and 170,000 wafers, with a focus on CIS and high-end 55nm products [2][7] - **Production Nodes**: 40nm products in mass production; 28nm products expected to begin small-scale production by the end of 2025 [2][8] Technology and Product Diversification - **Revenue Distribution by Application**: - DDIC: Decreased from 67% to 61% - CIS: Increased from 18% to 20% - PMIC: Increased from 9% to 11.5% - Logic and MCU: Approximately 7% [2][6] - **Future Product Focus**: Plans to increase CIS revenue share to around 25% and introduce more high-end products [19] Market and Pricing Outlook - **Consumer Electronics Market**: Recovery noted, but price increases are challenging; stability in pricing expected [10][11] - **Component Pricing**: No significant fluctuations anticipated in electronic component prices, including DDIC and MCU [11] - **North American Market**: Limited share; primarily focused on domestic demand [12] Research and Development - **R&D Expenses**: Expected to exceed 1.3 billion CNY in 2025, a year-on-year increase of about 10% [4][17] - **Depreciation**: Expected to approach 4 billion CNY due to ongoing expansions [17] Competitive Landscape - **Domestic Competition**: Increased pressure from local mature process wafer fabs; focus on technological advancement to maintain a competitive edge [18] - **International Collaboration**: Ongoing discussions with international terminal and IDM companies to expand market presence [16] Future Projections - **Long-term Capacity Goals**: Total capacity expected to reach 260,000 to 280,000 wafers within 3-5 years [19] - **Product Revenue Projections**: DDIC revenue share expected to decrease to 40%-45%, while absolute revenue increases; CIS expected to grow significantly [19] Additional Insights - **Airbi Product Development**: Anticipated market share of 8%-10% by 2026-2028, with strong growth in both domestic and international markets [20] - **CIS Client Development**: Key partnerships established, with significant production expected to meet demand [21] - **OLED Driver Market**: Detailed plans for market expansion and competition management [26] This summary encapsulates the key points from the conference call, highlighting the company's financial performance, strategic plans, market outlook, and competitive positioning within the semiconductor industry.

Summary of Huichuan Technology Conference Call Company Overview - **Company**: Huichuan Technology - **Industry**: Industrial Automation and New Energy Vehicles Key Financial Performance - **2024 Revenue**: 37 billion CNY, up 22% YoY - **2024 Net Profit**: 4.3 billion CNY, down 9.6% YoY, impacted by lower gross margins in new energy vehicles and industry competition - **2024 Operating Cash Flow**: 7.2 billion CNY, up over 100% YoY - **Q1 2025 Revenue**: 9 billion CNY, up 31% YoY - **Q1 2025 Net Profit**: 1.3 billion CNY, up 63% YoY, with a gross margin of 31% [2][8][7] Business Segment Performance - **General Automation**: - 2024 growth of 2%, with significant overseas revenue growth - Key products: Servo systems (5.6 billion CNY), Variable frequency drives (5.2 billion CNY), Small PLCs (1.3 billion CNY), Industrial robots (1.1 billion CNY) - **New Energy Vehicles**: - Diverse product solutions with a balanced customer structure - Market shares: Motor controllers (10.7%, 1st among third-party suppliers), rotor market (2nd), powertrain (4th), OBC (8th) - **Smart Elevators**: - Sales growth driven by domestic and international clients despite real estate market impacts [2][9][10] Strategic Initiatives - **Global Expansion**: - Established 18 subsidiaries and offices globally, with a focus on integrated operations in sales, service, production, R&D, and investment - R&D center in Europe and factories in Hungary and Thailand [2][5][11] - **AI and Robotics**: - Focus on humanoid robots as a major opportunity, with plans to launch complete products by 2027-2028 - Investment in core components like drivers and motors [4][21][29] - **Industrial Software**: - Launched IFA, the first fully integrated industrial automation software platform in China - Strategic investments in multiple industrial software companies [4][19][20] Market Challenges and Responses - **Domestic Competition**: - Implemented measures to enhance value and quality, including upgrades to customer and product operations - Established 12 industry business units to better serve market needs [3][6] - **Tariff Impacts**: - Anticipated short-term impacts from tariffs, with a focus on maintaining operational efficiency and customer management [16][31] - **Profitability Guidance**: - Despite strong Q1 growth, cautious annual profit growth guidance of 5%-20% due to uncertainties in external factors [43] Future Growth Areas - **Focus on Process Industries**: - Targeting sectors like metallurgy, petrochemicals, and municipal services for growth - Plans to optimize product structure and expand into underrepresented OEM sectors [14][35] - **New Product Development**: - New products in industrial automation expected to contribute significantly to revenue [15][42] - **Humanoid Robots**: - Long-term investment strategy with a focus on core components and market understanding [36][52] Conclusion Huichuan Technology is positioned for growth through strategic global expansion, innovation in AI and robotics, and a focus on enhancing product offerings in the industrial automation and new energy vehicle sectors. The company is navigating competitive pressures and market challenges while setting ambitious targets for future performance.

Summary of the Conference Call for Guibao Pet Industry Overview - The pet food industry in China is experiencing significant trends of domestic substitution and consumption upgrade, with mid-to-high-end domestic brands like Fleigat and Xianlang performing well in the 2024 Double Eleven sales, indicating successful domestic substitution [2][3] - The industry is projected to maintain high double-digit growth, particularly in online channels, with Tmall's growth exceeding 15% and Douyin's growth around 60% in 2024 [3] Key Trends for 2025 - Keywords for the pet food industry in 2025 include "cat economy" (refined feeding and multi-cat households), increase in small dog ownership (demand for premium food), and aging pets (increased demand for customized food for elderly cats and dogs, which is typically priced higher) [2][4][5] Company Performance - Guibao Pet has excelled due to historical advantages (capitalizing on internet channel benefits and collaboration with JD), comprehensive capabilities (marketing, product strength, supply chain), and advantages from its own supply chain in the staple food sector [2][6] - The company has established a full price range brand matrix, with Maifudi as the main brand and Fleigat as the high-end brand, leading to accelerated revenue and profit growth since its listing [2][7] Financial Highlights - In 2024, Guibao Pet's self-owned brand business revenue reached 3.545 billion yuan, a nearly 30% year-on-year increase, accounting for nearly 70% of total revenue [4][11] - Maifudi's growth reached 100%, with expectations for Fleigat and goat milk meat series to perform well in 2025, and the buff series achieving a 150% year-on-year increase during the Double Eleven sales [4][11] Competitive Advantages - The company's own supply chain provides a unique competitive advantage, allowing for differentiated market branding and rapid response to new product development compared to light-asset models of emerging brands [9] - Guibao Pet's strong supply chain capabilities and brand replicability have led to success in both low-end and mid-to-high-end markets, with significant growth in direct sales, which accounted for 37.55% of revenue in 2024 [10] Profitability and Market Position - The staple food category is crucial for Guibao Pet, with revenue from staple foods reaching 2.7 billion yuan in 2024, accounting for 50% of total revenue [12] - The company has seen a net profit margin increase to nearly 12% in 2024, further rising to 13.82% in Q1 2025, driven by the successful high-end product lines [13][14] Future Market Expectations - The pet industry is expected to exceed a scale of 100 billion yuan, with Guibao Pet projected to capture over 20% market share, indicating significant potential for growth in market value and profits [15]

Summary of Jinbei Electric's Conference Call Company Overview - **Company**: Jinbei Electric - **Industry**: Electric Wire and Cable Manufacturing Key Financial Performance - In Q1 2025, Jinbei Electric reported revenue of **4.097 billion** yuan, a year-on-year increase of **16.32%** [2][3] - Net profit attributable to shareholders was **136 million** yuan, up **1.84%** year-on-year [2][3] - Cash flow increased by **8.37%** year-on-year, indicating stable operational performance despite market challenges [2][3] Business Segment Performance - The business structure is becoming more balanced, with battery wires and electric wires/cables contributing approximately **40%** and **60%** to revenue, respectively [2][4] - Battery wire profits grew over **50%** due to investments in the power grid and demand from new energy vehicles [2][4] - Sales of flat wires for new energy vehicles and industrial motors increased by **38%** and **31%**, respectively [2][6] - Clean energy cable shipments (wind and solar) surged over **300%**, while industrial cable shipments for charging stations grew over **500%** [2][6] Market and Export Developments - Direct export shipments increased by over **10%** year-on-year, with significant sales to Europe, the Middle East, Central Asia, East Asia, and Southeast Asia [2][6] - The company released its first ESG report, emphasizing its commitment to sustainable development [2][6] Impact of Copper Price Fluctuations - Copper prices rose by **10%** year-on-year in Q1 2025, impacting profit margins [9][10] - The electronic wire segment, using a direct sales model and copper price hedging, experienced minimal profit impact from copper price fluctuations [8][10] - The power cable segment, which operates on a distribution model, faces exposure risks; however, overall profit impact from copper price changes remains limited [7][8] Future Outlook - The company anticipates continued revenue and profit growth in Q2 2025, contingent on stable copper prices [22] - Despite challenges in the real estate market affecting cable demand, strategic investments in power grid projects are expected to improve performance [15][22] - The company has over **3 billion** yuan in orders, with delivery cycles ranging from six months to one and a half years [21] Emerging Business and Market Trends - Demand for industrial applications, including industrial robot cables and charging station cables, is driving business growth [24] - The company is expanding its presence in the European market, with a factory expected to be operational by the end of the year [23] Conclusion - Jinbei Electric is navigating a challenging market environment with a balanced business structure and strategic investments, positioning itself for future growth despite external pressures from copper prices and real estate market fluctuations [2][3][7][15]