Market research shows that the demand for the customized futa sex doll has increased by 35% in recent years, and consumers are particularly concerned about the technology of replaceable organ modules. Lesbian sex dolls tend to be designed for two-person interactive modeling, reflecting the dynamics of intimate relationships. Both types of products need to break through traditional manufacturing processes, such as using 3D printed skeleton frames to ensure freedom of movement. The current technical bottleneck lies in how to make the complex physiological system of futa sex dolls more ergonomic and make the facial expressions of the lesbian sex doll more natural.