1. Core Positioning A key component of the automotive door system, installed at the connection between the door and vehicle body. It controls the door opening angle via a mechanical structure to prevent over-opening collision with obstacles, restricts random door sway, and improves door opening/closing stability and safety. Compatible with all passenger and commercial vehicles. 2. Core Functions Multi-Angle Positioning: Supports 30°/60°/90° three gears, meeting door operation needs in narrow lanes, parking lots and other scenarios； Buffer & Vibration Reduction: Built-in damping structure reduces impact force during opening/closing, avoiding hard collision between door and body； Weather & Wear Resistance: Made of cold-rolled steel/stainless steel, resistant to -40℃ to 85℃ and rainwater corrosion； Safety Protection: Limits maximum door opening angle (≤95°), preventing hinge damage caused by wind resistance or external force. 3. Core Advantages Safe & Stable: Precisely controls angle, reducing the risk of door colliding with body or obstacles； Long Service Life: Anti-aging metal structure, service life ≥5 years/150,000km； Easy Installation: Direct replacement of original limiter, adapting to original door hinge interface without modification； Mute Design: Damping components reduce friction noise for smoother door operation. 4. Adaptability Vehicles: Covers passenger vehicles (sedans/SUVs/MPVs), commercial vehicles (light trucks/buses)； Door Types: Adapts to front/rear doors, supporting custom sliding door-specific models (optional). 5. Service Support Contact customer service for vehicle adaptation lists and installation diagrams; free guidance on installation tips is provided.