collaborated with an automotive baby product brand to customize five-point hardware buckles for baby car seats. Using high-toughness cold-rolled steel sheet, through precision stamping and quenching processes, the buckle can bear a load of 120kg, impact-resistant and not easy to break, meeting international baby safety certification standards. The locking structure is optimized with an anti-misoperation design to prevent babies from opening it by themselves. The surface is treated with environmentally friendly electroplating, free of harmful substances, with a smooth touch, suitable for car seats of different age groups. This customized buckle helped the partner increase car seat sales by 48%, becoming the designated supporting supplier for many domestic baby product brands.