How is the soft-closing feature of the AU102 toilet seat achieved?

Material Characteristics Support ：  

1. Physical Advantages of UF Resin The  uses urea-formaldehyde resin (UF), a thermosetting material with high hardness, scratch resistance, and anti-yellowing properties. Its density and toughness provide the structural foundation for the slow-closing mechanism, ensuring the hinge system remains stable through repeated openings and closings.   

2. Temperature Adaptability UF material is not affected by fluctuations in room temperature, avoiding mechanical deformation caused by thermal expansion and contraction, thereby maintaining the long-term effectiveness of the soft-closing function.

Mechanical Design Principles ：  

1. Hydraulic/Spring Slow-C：lose System The hinge part integrates hydraulic dampers or spring structures, achieving slow closing through energy buffering. After a light push from the user, the internal system gradually releases kinetic energy through fluid resistance or elastic deformation, eliminating impact noise.  

2. Anti-Displacement and Precise Fit The accompanying STA-TITE fastening system ensures that the hinge remains secure, preventing displacement that could affect the soft-close effect. Some models also allow length adjustment (70-170mm) to fit different toilet sizes for optimized closing trajectories.

Functional Value ：

1. Quietness and Safety Eliminates the slamming noise of traditional toilet seats and prevents pinching injuries (especially important for homes with children).  

2. Durability The combination of UF resin and metal hinges can withstand over 120,000 opening and closing tests, extending the product's lifespan.