Core Points - Langjin Technology's stock price has dropped 5.04% on September 23, currently trading at 16.97 yuan per share, with a total market capitalization of 1.559 billion yuan [1] - The company has experienced a cumulative decline of 2.62% over the past three days [1] Company Overview - Langjin Technology, established on April 7, 2000, is located in Jinan, Shandong Province, and was listed on June 21, 2019 [1] - The company's main business includes air conditioning for rail transit vehicles, air conditioning for new energy vehicles, intelligent thermal management products, air energy heat pump drying equipment, digital energy intelligent environmental control products, and their control systems [1] - Revenue composition: rail transit vehicle air conditioning and services account for 69.87%, new energy and intelligent thermal management products 23.83%, digital energy intelligent environmental control products 3.53%, controller products 1.35%, and others 1.41% [1] Shareholder Information - Noan Fund's Noan Multi-Strategy Mixed A (320016) has entered the top ten circulating shareholders of Langjin Technology, holding 562,400 shares, which is 0.62% of the circulating shares [2] - The fund has incurred a floating loss of approximately 506,200 yuan today, with a total floating loss of 270,000 yuan over the past three days [2] - The fund was established on August 9, 2011, with a current size of 1.399 billion yuan, and has achieved a year-to-date return of 57.56% [2] Fund Manager Performance - The fund manager, Kong Xianzheng, has a tenure of 4 years and 302 days, with a total fund size of 4.607 billion yuan, achieving a best return of 72.6% during his tenure [3] - Co-manager Wang Haichang has a tenure of 3 years and 64 days, managing a fund size of 2.529 billion yuan, with a best return of 60.45% during his tenure [3]