1 in which ultra-thin standards brackets at the end of a hair-net (the patent), the strong bond;
2 entrusted bottom of a bionic multiple surfaces, and tooth paste of a close;
3 wire slot size high accuracy, finish, and with the wire to reduce the friction.
4 bracket by overall processing, and overcome the split-type bracket for solid welding not easily shedding flaws.
2 entrusted bottom of a bionic multiple surfaces, and tooth paste of a close;
3 wire slot size high accuracy, finish, and with the wire to reduce the friction.
4 bracket by overall processing, and overcome the split-type bracket for solid welding not easily shedding flaws.