双林股份（300100）：公司事件点评报告：螺纹磨床自主可控，全产业链布局确立

Investment Rating - The report maintains a "Buy" investment rating for the company [8] Core Insights - The company has successfully completed the acquisition of Wuxi Kezhixin, achieving self-control over internal thread grinding machines, which enhances its competitive edge in the industry [4][5] - The company has established a full industry chain capability, leading to a technological breakthrough in domestic screw manufacturing [5][7] - The launch of the first domestically produced "reverse planetary roller screw" marks a significant milestone, with performance metrics surpassing traditional products [7] Summary by Sections Acquisition and Technology - The acquisition of Wuxi Kezhixin allows the company to control the upstream supply chain, reducing the cost of internal thread grinding machines from hundreds of millions to around 30 million yuan, while also shortening delivery times by 75% [4] - Wuxi Kezhixin has over 30 proprietary patents and has achieved international leading precision levels in CNC thread grinding machines [4] Product Development - The company has efficiently completed the R&D verification of two core products: automotive EHB ball screws and robotic planetary roller screws within two years [5] - The new product's transmission error is controlled within ±0.003mm, with a load capacity increase of 300% and a lifespan extension of three times compared to traditional ball screws [7] Financial Forecast - Revenue projections for 2024, 2025, and 2026 are 48.3 billion, 55.8 billion, and 62.2 billion yuan respectively, with net profits of 4.8 billion, 5.0 billion, and 6.0 billion yuan [8][11] - The earnings per share (EPS) are forecasted to be 1.2, 1.3, and 1.5 yuan for the same years, with corresponding price-to-earnings (PE) ratios of 50.7, 48.4, and 40.5 [8][11]