Quantitative Models and Construction Methods 1. Model Name: 250-Day New High Distance Model - **Model Construction Idea**: This model tracks the distance of stock prices or indices from their 250-day high to monitor market trends and identify potential market leaders. It is based on the momentum and trend-following strategy, which has been proven effective in various studies[11][18]. - **Model Construction Process**: The 250-day new high distance is calculated as follows: $ 250 \text{-day new high distance} = 1 - \frac{\text{Close}_{t}}{\text{ts\_max(Close, 250)}} $ Where: - $\text{Close}_{t}$ represents the latest closing price - $\text{ts\_max(Close, 250)}$ represents the maximum closing price over the past 250 trading days If the latest closing price reaches a new high, the distance is 0. If the price has fallen from the high, the distance is a positive value, indicating the degree of decline[11]. - **Model Evaluation**: The model effectively identifies market trends and highlights stocks or indices that are leading the market, aligning with the principles of momentum and trend-following strategies[11][18]. 2. Model Name: Stable New High Stock Selection Model - **Model Construction Idea**: This model focuses on selecting stocks that exhibit stable price paths and consistent momentum, as smoother price trajectories are associated with stronger momentum effects[24][27]. - **Model Construction Process**: The selection process involves the following criteria: - **Analyst Attention**: At least 5 buy or overweight ratings in the past 3 months - **Relative Strength**: 250-day price change in the top 20% of the market - **Price Stability**: Stocks are ranked based on: - **Price Path Smoothness**: Ratio of price displacement to the total price path - **Sustainability of New Highs**: Average 250-day new high distance over the past 120 days - **Trend Continuity**: Average 250-day new high distance over the past 5 days The top 50 stocks based on these criteria are selected[24][27]. - **Model Evaluation**: The model emphasizes the importance of smooth price paths and consistent momentum, which are less likely to attract excessive attention and thus yield stronger returns[24][27]. --- Model Backtesting Results 1. 250-Day New High Distance Model - **Indices' 250-Day New High Distance**: - Shanghai Composite Index: 4.83% - Shenzhen Component Index: 8.65% - CSI 300: 6.20% - CSI 500: 9.69% - CSI 1000: 7.59% - CSI 2000: 7.40% - ChiNext Index: 12.16% - STAR 50 Index: 16.45%[12][13][32] 2. Stable New High Stock Selection Model - **Selected Stocks**: 15 stocks were identified, including Heertai, Sray New Materials, and Zangge Mining. - **Sector Distribution**: - Manufacturing: 5 stocks (e.g., construction industry) - Cyclical: 5 stocks (e.g., non-ferrous metals industry)[28][33] --- Quantitative Factors and Construction Methods 1. Factor Name: 250-Day New High Distance - **Factor Construction Idea**: This factor measures the relative distance of a stock's price from its 250-day high, serving as an indicator of momentum and trend strength[11]. - **Factor Construction Process**: The formula is: $ 250 \text{-day new high distance} = 1 - \frac{\text{Close}_{t}}{\text{ts\_max(Close, 250)}} $ Where: - $\text{Close}_{t}$ is the latest closing price - $\text{ts\_max(Close, 250)}$ is the maximum closing price over the past 250 trading days[11]. - **Factor Evaluation**: The factor effectively captures momentum and trend-following characteristics, making it a reliable indicator for identifying market leaders[11]. 2. Factor Name: Price Path Smoothness - **Factor Construction Idea**: This factor evaluates the smoothness of a stock's price trajectory, as smoother paths are associated with stronger momentum effects[24]. - **Factor Construction Process**: - Calculate the ratio of price displacement to the total price path over a specified period - Rank stocks based on this ratio and select the top performers[24]. - **Factor Evaluation**: The factor highlights stocks with stable momentum, which are less likely to attract excessive attention and thus yield stronger returns[24]. --- Factor Backtesting Results 1. 250-Day New High Distance Factor - **Indices' 250-Day New High Distance**: - Shanghai Composite Index: 4.83% - Shenzhen Component Index: 8.65% - CSI 300: 6.20% - CSI 500: 9.69% - CSI 1000: 7.59% - CSI 2000: 7.40% - ChiNext Index: 12.16% - STAR 50 Index: 16.45%[12][13][32] 2. Price Path Smoothness Factor - **Selected Stocks**: 15 stocks were identified, including Heertai, Sray New Materials, and Zangge Mining. - **Sector Distribution**: - Manufacturing: 5 stocks (e.g., construction industry) - Cyclical: 5 stocks (e.g., non-ferrous metals industry)[28][33]

Group 1 - The report tracks stocks, industries, and sectors that are reaching new highs, indicating market trends and hotspots [1][4][24] - As of November 21, 2025, the distance to the 250-day new high for major indices is as follows: Shanghai Composite Index 4.83%, Shenzhen Component Index 8.65%, CSI 300 6.20%, CSI 500 9.69%, CSI 1000 7.59%, CSI 2000 7.40%, ChiNext Index 12.16%, and STAR 50 Index 16.45% [5][24] - Among the CITIC primary industry indices, the sectors closest to their 250-day new highs include petroleum and petrochemicals, textiles and apparel, basic chemicals, home appliances, and steel [8][24] Group 2 - A total of 1,127 stocks reached a 250-day new high in the past 20 trading days, with the highest number of new highs in the basic chemicals, machinery, and power equipment and new energy sectors [2][13][24] - The highest proportion of new high stocks is found in the textiles and apparel, coal, and non-ferrous metals sectors, with respective proportions of 41.41%, 38.89%, and 38.71% [13][24] - The cyclical and manufacturing sectors had the most new high stocks this week, with 364 and 315 stocks respectively [15][24] Group 3 - The report identifies 15 stocks that have shown stable new highs, including Heertai, Sry New Materials, and Cangge Mining, with the manufacturing and cyclical sectors contributing the most stocks [3][20][25] - The construction industry had the highest number of new highs within the manufacturing sector, while the non-ferrous metals industry led in the cyclical sector [20][25]

Group 1: New Stock Offerings - Tianpu Co., Ltd. (Stock Code: 605255) has a tender offer period from November 20, 2025, to December 19, 2025[1] - Hangzhou Steam Turbine Co., Ltd. (Stock Code: 200771) has a cash option declaration period from November 19, 2025, to November 25, 2025[1] - Central Plaza (Stock Code: 600280) announced on November 20, 2025[1] Group 2: Stock Performance Alerts - Moen Electric (Stock Code: 002451) reported severe abnormal fluctuations on November 14, 2025[1] - ST Yuancheng (Stock Code: 603388) reported severe abnormal fluctuations on November 11, 2025[1] - ST Keli Da (Stock Code: 603828) reported severe abnormal fluctuations on November 12, 2025[1] Group 3: Recent Announcements - Jiumuwang (Stock Code: 601566) announced on November 20, 2025[1] - Taiping Bird (Stock Code: 603877) announced on November 20, 2025[1] - Huaci Co., Ltd. (Stock Code: 001216) announced on November 20, 2025[1]

Summary of Cleanroom Industry Conference Call Industry Overview - The cleanroom engineering service market is experiencing significant growth driven by multiple factors, including strong performance from companies like Yaxiang Integration and the increasing demand in the semiconductor and new energy sectors [1][2][3] - The market for semiconductor-related cleanroom capital expenditure has notably increased, reaching approximately 30 billion RMB, with expectations for further growth due to domestic substitution trends [1][8] Key Companies - **Yaxiang Integration**: Recommended as a top stock, benefiting from overseas capital expenditure trends in the semiconductor and new energy sectors. The company achieved its best quarterly gross margin and scale of operations in Q3 [1][2] - **Mei'an Technology**: A leading air purification equipment manufacturer, expected to achieve a profit of at least 300 million RMB by 2026, with a reasonable market valuation of around 6 billion RMB [3][14][16] - **Shenghui**: Engaged in upstream and downstream cleanroom engineering, focusing on projects related to Huawei and PCB [6][7] Financial Performance and Projections - Yaxiang Integration's Q3 performance exceeded expectations, with a projected net profit of 900-1,000 million RMB by 2026, and a target market capitalization of around 15 billion RMB [3][4][12] - The company is expected to secure over 10 billion RMB in new orders in the Singapore market by 2025, with a gross margin of approximately 27.5% [1][11] - Mei'an Technology's revenue structure is less affected by investment cycle fluctuations due to a significant portion of sales coming from replacement demand [15][16] Market Dynamics - The cleanroom engineering service market is driven by the need for high cleanliness levels in various sectors, including semiconductors, new energy, biomedicine, and food and beverage [5] - The overseas market is benefiting from AI demand and geopolitical factors, with significant orders being awarded to a few service providers, enhancing operational efficiency [9][10] Future Trends - The semiconductor industry is entering a new investment cycle, particularly in Southeast Asia, with major investments announced by companies like Micron and World Advanced [10][11] - The cleanroom capital expenditure is expected to structurally increase as domestic players tackle advanced processes, with a focus on companies with rich experience in the field [8][9] Conclusion - The cleanroom engineering service market is poised for substantial growth, driven by strong demand in the semiconductor sector and supportive macroeconomic factors. Companies like Yaxiang Integration and Mei'an Technology are well-positioned to capitalize on these trends, with promising financial projections and market opportunities ahead [1][2][3][4][12][16]

Industry News - The Ministry of Industry and Information Technology issued the "Guidelines for the Construction of High-Standard Digital Parks," aiming to establish around 200 high-standard digital parks by 2027, with a target of achieving 100% coverage of dual-gigabit networks and effective deployment of computing power infrastructure [4] Company News - Chinese Media announced plans to use idle funds of 9.5 billion yuan to purchase financial products [7] - Xiaomi Group reported third-quarter revenue of 113.12 billion yuan, a year-on-year increase of 22.3%, with adjusted net profit reaching a record high of 11.3 billion yuan, up 80.9% year-on-year. The company aims to meet its annual delivery target of 350,000 units for Xiaomi cars this week [7] - Pinduoduo reported third-quarter revenue of 108.28 billion yuan, with adjusted earnings per ADS of 21.08 yuan [9] - Baidu's third-quarter financial report showed total revenue of 31.2 billion yuan, with core revenue of 24.7 billion yuan. The company disclosed AI business revenue for the first time, showing a year-on-year growth of over 50% [9] - Jingmei Technology announced a cooperation framework agreement with CATL for the joint design and development of "lithium battery composite busbars" [9] - Ever Creative, the second-largest shareholder of Yaxiang Integration, reduced its holdings by 130,000 shares as of November 18 [10]

Core Viewpoint - The stock of Yaxiang Integrated (603929) experienced a limit-up on the trading day, with significant institutional buying and a notable change in trading volume and turnover rate [2][3]. Group 1: Stock Performance - Yaxiang Integrated's stock reached a limit-up with a turnover rate of 3.47% and a total transaction value of 409 million yuan, showing a price fluctuation of 11.88% [2]. - The stock was listed on the Shanghai Stock Exchange due to a daily price deviation of 10.81% [2]. Group 2: Institutional Activity - Institutional investors net bought 68.09 million yuan worth of shares, while the Shanghai-Hong Kong Stock Connect saw a net sell of 11.26 million yuan [2]. - The top five trading departments accounted for a total transaction value of 267 million yuan, with a net buying amount of 56.41 million yuan [2][3]. Group 3: Recent Financial Performance - For the first three quarters, Yaxiang Integrated reported a revenue of 3.109 billion yuan, a year-on-year decrease of 29.63%, while net profit was 442 million yuan, reflecting a year-on-year increase of 0.78% [3].

Core Insights - On November 18, several companies disclosed their shareholding changes, with 康缘药业, 超达装备, and 海大集团 announcing share buybacks, while 15 companies, including 立达信 and 艾布鲁, reported share reductions [1][2]. Group 1: Share Buybacks - 康缘药业's actual controller and director, 肖伟, increased his shareholding by 20,000 shares [2]. - 超达装备 secured a stock repurchase loan commitment from China Bank for up to 450 million yuan [2]. - 海大集团 plans to repurchase shares worth no less than 1 billion yuan and up to 1.6 billion yuan [2]. Group 2: Share Reductions - 立达信's shareholder, 李春华, intends to reduce his stake by no more than 1.56% [2]. - 艾布鲁's controlling shareholder, 钟儒波, plans to reduce his stake by no more than 3% [2]. - 高德红外's actual controller, 黄立, aims to reduce his stake by no more than 3% [2]. - 嘉美包装's shareholders plan to collectively reduce their stake by no more than 1.16% [2]. - 蓄奥规划's shareholders intend to reduce their stake by no more than 1% [2]. - 君逸数码's shareholder, 成都高创投, plans to reduce his stake by no more than 1% [2]. - 联合水务's shareholder, 上海衡联, intends to reduce his stake by no more than 0.14% [2]. - 亚翔集成's second-largest shareholder has reduced 130,000 shares and is still in the reduction period [2]. - 芯朋微's controlling shareholder, 张立新, has terminated his reduction plan early [2]. - 安旭生物's shareholder, 马华祥, plans to reduce his stake by no more than 0.94% [2]. - 农心科技's shareholder, 宁波农旗, intends to reduce his stake by no more than 0.54% [2]. - 禾川科技's actual controller and others plan to reduce their stake by no more than 6% [2]. - 世龙实业's shareholder, 电化高科, plans to reduce his stake by no more than 3% [2]. - 中国化学's executive, 聂宁新, intends to reduce his stake by no more than 60,000 shares [2]. - 鸿泉技术's shareholder, 千方科技, plans to reduce his stake by no more than 3% [2].

Core Viewpoint - The stock of Yaxiang Integrated has experienced significant volatility, with a cumulative price increase exceeding 20% over three consecutive trading days, raising concerns about irrational speculation and shareholder reduction risks [2]. Group 1: Stock Performance and Trading Activity - Yaxiang Integrated's stock price closed at 58.18 yuan per share on November 18, with a daily increase of 10%, achieving a "three days, two boards" performance [4]. - The company announced that the stock price's short-term increase may be due to irrational speculation, urging investors to be cautious in their trading decisions [2]. Group 2: Shareholder Reduction Risk - The company disclosed that shareholder EVER CREATIVE INVESTMENTS LTD. has a share reduction plan in place from September 23 to December 22, 2025, having already reduced its holdings by 130,000 shares as of November 18 [2]. - The ongoing reduction by EVER CREATIVE poses a potential risk to the stock price stability [2]. Group 3: Financial Performance - For the first three quarters of 2025, Yaxiang Integrated reported an operating revenue of approximately 3.109 billion yuan, a year-on-year decrease of 29.63% [3]. - The net profit attributable to shareholders was approximately 442 million yuan, reflecting a slight year-on-year increase of 0.78% [3]. - The net cash flow from operating activities was about 1.07 billion yuan, down 20.29% year-on-year [3]. Group 4: Business Overview - Yaxiang Integrated specializes in providing cleanroom engineering, process secondary配工程, and construction services for the IC semiconductor and high-tech electronics industries [2].

Core Viewpoint - The stock of Yaxiang Integrated (603929.SH) experienced a significant price fluctuation, with a cumulative increase of over 20% in three consecutive trading days, triggering abnormal trading conditions as per the Shanghai Stock Exchange regulations [1] Company Information - Yaxiang Integrated announced that its stock price had abnormal fluctuations on November 14, 17, and 18, 2025, with a cumulative increase exceeding 20% [1] - The company disclosed a share reduction plan by its shareholder, EVER CREATIVE, which is set to take place from September 23, 2025, to December 22, 2025 [1] - On November 18, 2025, EVER CREATIVE reduced its holdings by 130,000 shares, and the shareholder is still within the reduction period [1] - The company conducted a self-inspection and confirmed, after consulting with its controlling shareholder and actual controller, that there are no undisclosed significant information as of the announcement date [1]

Core Viewpoint - The stock of Yaxiang Integration (603929.SH) experienced a significant price fluctuation, with a cumulative increase of over 20% in closing prices over three consecutive trading days in November 2025, indicating abnormal trading activity [1] Company Summary - Yaxiang Integration announced that its stock price had abnormal fluctuations, as defined by the Shanghai Stock Exchange trading rules, due to a cumulative increase exceeding 20% over three trading days [1] - The company disclosed a share reduction plan by its shareholder, EVER CREATIVE, which is set to take place from September 23, 2025, to December 22, 2025 [1] - On November 18, 2025, EVER CREATIVE reduced its holdings by 130,000 shares, and the shareholder is still within the reduction period [1] - The company conducted a self-examination and confirmed, after consulting with its controlling shareholder and actual controller, that there are no undisclosed significant information as of the announcement date [1]