Core Viewpoint - The article discusses Li Auto's four collaboration models with suppliers, emphasizing the importance of strategic partnerships and self-research in enhancing product competitiveness and supply chain security [1][5][13]. Group 1: Collaboration Models - **Self-Research and Manufacturing**: Li Auto designs and produces key components in-house, such as the rear electric drive system for the i8, to ensure competitive efficiency and product integration [6][7]. - **Self-Research with Key Technology Lock-in**: The company collaborates with suppliers like Huichuan to co-develop critical components, such as the front electric drive, to mitigate risks and enhance supply chain security [8][9]. - **Deep Cooperation for Cutting-Edge Technology**: Li Auto invests heavily in partnerships, such as with CATL for the 5C ultra-fast charging Kirin battery, which significantly improves charging times and vehicle range [11][12]. - **Strategic Cooperation for Product Optimization**: Collaborations with companies like Horizon and Hesai lead to customized components that meet specific technical requirements, enhancing overall product performance [12][14]. Group 2: Supply Chain Strategy - **Investment in Core Technologies**: Li Auto focuses on self-research in critical areas like battery cell technology while outsourcing manufacturing to specialized firms, ensuring advanced technology without heavy capital investment [14]. - **Dynamic Supplier Management**: The company maintains a flexible supplier base of approximately 500, aiming to streamline this number for better cost efficiency and competitive advantage [14]. - **Balancing Self-Research and Outsourcing**: Li Auto adopts a dual approach of self-research and external procurement to foster healthy competition among suppliers, ensuring continuous technological advancement and cost optimization [13][14].