1.Lub tshuab tsis siv neeg puv thiab ua haujlwm yooj yim.
2.Flying pom txiav yam tsis muaj deformation. Hydraulic txiav, tsis muaj suab nrov.
3.A lub tshuab dabtsi yog khoov tuaj yeem muab tau, thiab nws tuaj yeem ua rau shrinking thiab crimping ntawm tib lub tshuab.
4.Qhov kev sib sau thiab khoov tag nrho-hauv-ib lub tshuab muaj peev xwm ntau lawm thiab txuag kev ua haujlwm.
5.Cov nyhuv tsim yog qhov zoo. Qhov quav thiab qhov occlusal yog nruj dua.
6.Ib lub tshuab tuaj yeem ua ntau qhov sib txawv