Automotive coil springs are integral components in the suspension systems of vehicles, tasked with maintaining the ride height and absorbing the shock from road irregularities. These springs are helically wound metal rods that compress and expand to manage the motion of the vehicle's wheels. Main functions include supporting the vehicle's weight, reducing the impact of vibrations, and ensuring a comfortable and safe ride. Technological features of coil springs involve high-tensile strength materials that withstand constant compression and expansion cycles without permanent deformation. Their applications span a wide range of vehicles, from passenger cars to heavy-duty trucks, as they play a crucial role in the overall performance and handling characteristics of any automobile.