These are primarily reflective stickers or reflective strips applied to door sills or edges. Reflective sheeting main function is to increase visibility, especially in low-light conditions, using reflection to provide a warning effect.

These reflective strips are widely used in various places and on different items, with common applications including:

Car Door Sill Reflective Strips: Applied to the inner door sills of cars. Their primary purpose is to alert approaching vehicles or pedestrians when the car door is open at night or in dim light, helping to prevent collisions. Additionally, some reflective strips with texture (like carbon fiber pattern) can also serve as scratch protectors for the door sill surface.
Building Door Threshold Reflective Strips: In some building regulations, particularly for emergency exits or stairwell doors, reflective strips are required as markings. This ensures that in emergencies or during power outages, people can clearly identify the threshold location to avoid tripping.
Other Uses: Reflective strips are also commonly used on the bodies of bicycles, motorcycles, trucks, etc., as well as on personal items like backpacks and clothing, to enhance safety during nighttime activities.

Door sill reflective strips come in various materials, including:
High-Brightness Reflective Material: Such as 3M Diamond Grade or engineering-grade reflective materials, offering excellent reflection performance.
Combined with Anti-Scratch Material: Some products have a wear-resistant or textured layer (like carbon fiber pattern) on top of the reflective layer to provide additional protection.