Tiny surface pores easily accumulate grime and breed bacteria. This elite craftsmanship archive documents micro-pore sealing technology for medical-grade materials. After high-pressure molecular compression, surface pores are completely sealed to form a dense smooth barrier. Dust and moisture cannot penetrate the material interior, simplifying daily maintenance. While retaining delicate tactility, it achieves long-term antibacterial and mildew-proof performance. This advanced surface treatment technology enhances the safety and durability of collectible dolls.