1. Kho cov tshuaj muaj pes tsawg leeg ntawm qhov sib tsoo: Cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov khoom txiav yuav tsum tau kho raws li qhov yuav tsum tau ua thiab kev ntsuas kev ua haujlwm zoo.
2. Xaiv cov cuab yeej sib tsoo kom raug: Cov cuab yeej sib tsoo yuav tsum raug xaiv raws li cov tshuaj muaj pes tsawg leeg thiab cov khoom zoo.
3. Tswj kev sib tsoo siab: Kev sib tsoo siab yuav tsum tau tswj raws li qhov yuav tsum tau ua.
4. Kev txiav kom raug: kev txiav kom zoo yuav tsum tau ua kom ntseeg tau tias cov chaw ntawm cov khoom tau zoo ib yam.
5. Kev sib tsoo zoo: Kev sib tsoo zoo yuav tsum tau siv los xyuas kom meej qhov tshwm sim ntawm qhov sib tsoo.
6. Nruam polishing: Nruam polishing yuav tsum tau ua kom ntseeg tau tias polished nto yog uniform.
7. Kev siv tus neeg saib xyuas polishing: Txoj cai ntawm tus neeg saib xyuas polishing yuav tsum tau siv kom ua tiav qhov zoo tshaj plaws polishing nyhuv.
