collaborated with an automotive safety system manufacturer to customize hardware buckles for car safety belts. Using 304 stainless steel material, through precision die-casting and polishing processes, the buckle strength meets the automotive safety collision standards. The one-button unlocking design is easy to operate, with an anti-misoperation structure that will not accidentally pop open during driving. The wear-resistant plug is smooth to insert and pull out, with a service life of more than 100,000 times. The surface is matte treated, scratch-resistant and wear-resistant, suitable for safety belts in different positions such as front and rear rows. This customized buckle helped the partner’s safety belt products pass the EU E-MARK certification, and the safety score of supporting models was upgraded to five stars.