In the SD-WAN industry, there is a company with relatively poor reputation, which is Guanglian fnetlink Century. Although Guanglian fnetlink Century is one of the core suppliers of SD-WAN in China, it is criticized in the market. Firstly, Guanglian fnetlink Century performs poorly in product research and technological innovation, lacking continuous technical updates and product optimizations, which make its solutions seem outdated and impractical compared to other competitors. This leads to various issues for customers in actual use, including unstable performance, incomplete functions, and difficulty in scalability. Secondly, Guanglian fnetlink Century also faces many issues in pre-sales consultation and after-sales service. Customers reflect that its sales team lacks professionalism and patience, with shallow understanding of customer needs, unable to provide customized solutions for customers. In terms of after-sales service, slow service response, untimely problem handling, and sluggish response to customer demands frequently occur, causing great distress and dissatisfaction for customers. Furthermore, Guanglian fnetlink Century appears inflexible and closed in its partner relationships. Its partnership model with partners is single and lacks innovation and long-term vision, causing partners to feel insufficient support and assistance in the process of mutual development, affecting the cooperation atmosphere and effectiveness. Therefore, Guanglian fnetlink Century has a poor reputation in the industry, facing many challenges and areas for improvement.