high-tech solution for noiseless

a.Innovative 3D Hidden Design**: Features a concealed structure that integrates seamlessly with doors, offering both functional excellence and aesthetic minimalism. b.Dual Power Spring System**: Utilizes high-load energy-storage springs to deliver stronger door-closing force, ensuring efficient and reliable opening and closing cycles. c.Dual Buffering System with Exclusive Technology**: Adopts revolutionary integrated European-standard dampers, providing superior shock absorption and smooth operation. d.Oil-free Power Chamber**: Eliminates the need for hydraulic oil injection, achieving a breakthrough in hydraulic hinges with **zero oil leakage**, ensuring long-term performance stability. e.Exceptional Low-temperature Resistance**: Engineered with advanced materials and unique processes, it operates smoothly even at -25°C, unfazed by frost, ice, and snow challenges. f.Adjustable Door-closing Force & Damper**: Door-closing force is customizable to suit different door types, from lightweight entrance doors to heavy fire-resistant doors. The damper offers two modes—silent closing and stable locking—switchable with one click for personalized use. g.Optimized Functional Angle Design**: Boasts a unique angle structure with a free door-holding zone (180°-110°), a soft-closing zone (110°-20°), and a damping locking zone (20°-0°), ensuring a smooth, comfortable, and controlled door operation experience.