The innovative design of the auxiliary hook meets the needs of all types of elastic chains. The more rounded and smooth shape of the brackets brings a more comfortable wearing experience to the patient. The whole newly designed, patented technology ensures the stability of the bracket slide. Every opening and closing of the slide is seamless and accurate, to prevent food debris and guarantee treatment effect. MIM technique with high-precision mirror mold enables the effective 3D movement of the teeth by expressing accurate bracket data.