When conceiving an original alien sex doll, biomechanical feasibility testing is indispensable - for example, ensuring that the multi-legged structure is stable and load-bearing, or the durability of liquid effect parts, these invisible R&D costs are deeply reflected in the quotation. The material cost of a hentai sex doll made of imported platinum silicone accounts for 30%-40%. If the alien sex doll also needs customized electronic components, the total cost is often close to the 20,000 yuan mark.