a. Patent No.: ZL2010201083070
b. Color I.D. for easy identification
c. Smooth surface for patient comfort
d. Toruqe-in-base design techniques to provide level slot line-up, and help avoid occlusal interference
e. 80-gauge mesh offer everlasting effective bonding strength
f. Various methods of ligation can achieve different orthodonitc target at different treatment stage
g. The flexible use of four wings provides easier ligation and easier clinical operation