Customer Relationship Management (CRM) has become an essential tool for businesses to establish and maintain a multi-channel sales system. This practical case analysis will focus on the use of CRM in overseas retail stores to effectively manage customer relationships and drive sales. One of the key benefits of using CRM in overseas retail stores is the ability to centralize customer data from various channels, including online and offline sales, social media, and customer service interactions. This allows businesses to gain a comprehensive view of their customers' preferences, purchase history, and communication preferences, enabling them to tailor their marketing and sales efforts to better meet their customers' needs. In addition, CRM systems can help overseas retail stores to streamline their sales processes by automating tasks such as lead management, order processing, and customer follow-ups. This not only saves time and resources but also ensures that sales opportunities are not missed and that customers receive a consistent and personalized experience across all channels. Furthermore, CRM can be used to analyze customer data and identify trends and patterns that can be used to optimize sales strategies. For example, by analyzing customer purchase history and behavior, overseas retail stores can identify cross-selling and upselling opportunities, as well as develop targeted marketing campaigns to drive sales. A practical case analysis of a successful implementation of CRM in overseas retail stores is the use of Salesforce CRM by a global fashion retailer. By integrating Salesforce CRM with their online and offline sales channels, the retailer was able to gain a 360-degree view of their customers and personalize their marketing and sales efforts. This resulted in a significant increase in sales and customer satisfaction, as well as improved customer retention and loyalty. In conclusion, using CRM to establish a multi-channel sales system in overseas retail stores is essential for businesses to effectively manage customer relationships and drive sales. By centralizing customer data, streamlining sales processes, and analyzing customer data, businesses can gain a competitive edge and achieve sustainable growth in the global market. The practical case analysis of the global fashion retailer demonstrates the significant impact that CRM can have on sales and customer satisfaction, making it a valuable investment for overseas retail stores.