Group 1 - The article discusses the revitalization of the Tianjin International Entrepreneurship Center, which has transformed into the China Tianjin Overseas Students Entrepreneurship Park, focusing on enhancing the entrepreneurial environment for returnees [3][4]. - The park has successfully attracted over 300 high-level talents and aims to provide better services for entrepreneurship in the region [3][4]. - The park has experienced a resurgence after a period of stagnation due to reforms and management adjustments [3]. Group 2 - Nika Optics, founded in July 2022, specializes in AR optical display technology and has received an investment of 8 million yuan from Xiaomi [5]. - The company has achieved mass production of its core device, the near-eye optical display module, with a 30° field of view [5][7]. - Nika's technology advantage lies in its self-developed photopolymer, which has led to 100% localization of materials used in its products [7]. Group 3 - The Tianjin Binhai High-tech Zone has implemented various support measures for startups, including financial backing from banks and investment institutions, resulting in 430 million yuan in equity financing and 210 million yuan in debt financing in 2024 [8]. - The park hosts 64 resident companies, primarily in the medical device sector, and offers shared facilities to support these businesses [8][9]. - The park is exploring intellectual property financing services to help startups overcome funding challenges [9]. Group 4 - The article highlights the success of Zhang Jun, a postdoctoral researcher who won a gold medal at the National Postdoctoral Innovation and Entrepreneurship Competition for his project on sodium-ion battery materials [10]. - Zhang's company, Na Kun Carbon Source, focuses on developing high-performance carbon anode materials for sodium-ion batteries, which are seen as a sustainable alternative to lithium-ion batteries [10][11]. - The Tianjin Overseas Students Entrepreneurship Park has facilitated funding and support for Zhang's team, helping them to overcome initial challenges and accelerate their industrialization process [11].