4Utech, officially known as Shiyou Technology (Beijing) Co., Ltd., is a Chinese company specializing in full-stack digital human solutions. Established in 2015, it offers customized virtual digital humans for industries including tourism, broadcasting, finance, and education. Its offerings include real-time AI-powered avatars, interactive systems, and virtual studios. The company has developed its own 3D next-generation engine and proprietary tools such as the "BOTA AI Digital Human" and a “Virtual Factory” system for rapid avatar production. 4Utech provides 2D, 2.5D, and 3D digital humans, and emphasizes applications in smart exhibitions, livestreaming, marketing, and cultural heritage. Its solutions support realistic interaction, voice-driven animation, and rapid content generation, contributing to the expansion of the digital human metaverse in China.