What does ISOFIX on car seats mean?

[VanJoel]

ISOFIX on car seats refers to a system for connecting child restraint systems to vehicles. It consists of two rigid attachment points on the vehicle, two corresponding rigid attachment devices on the child restraint system, and an anti-rotation method (such as top tether anti-rotation or support leg anti-rotation). The steps to detach an ISOFIX interface are: 1. Adjust the safety seat headrest to its highest position; 2. Press the shoulder strap adjuster and adjust the shoulder straps to their limit; 3. Open the buckle to separate the shoulder straps left and right, placing them on both sides of the seat; 4. Fasten the five-point buckle and adjust the shoulder straps to the bottom; 5. Push the seat inward while simultaneously pressing the red buttons on the ISOFIX interface, then pull backward forcefully until a click sound is heard, indicating the ISOFIX interface has been successfully removed.