1. Lub kaum sab xis 1 degree * qhov siab 1mm=0.0174mm (segment txawv);
2. 1 strip=1 hlau=0.01mm;
3. Paub meej tias ejection kev taw qhia ntawm pem hauv ntej thiab nram qab pwm;
4. Tag nrho cov khoom tsim tawm yog tsim los ntawm kev txo cov kua nplaum, yog tias koj xav tau cov kua nplaum ntxiv, tus neeg siv khoom yuav tsum paub meej tias nws ua ntej kev kos duab;
5. Yog hais tias muaj cov kab sib npaug ntawm qhov kev kos duab, tshem tawm lub voj voog thiab rub rov qab, thiab tom qab ntawd rewind tib lub kaum sab xis (cov khoom yuav hloov me ntsis tom qab kos duab, ib txwm);
6. Kev ua haujlwm thiab cov tsos ntawm cov khoom yuav tsum tsis txhob cuam tshuam tom qab kev tsim khoom;
7. Lub kaum sab xis ntawm cov khoom feem ntau yog 3 degrees, tab sis nws nyob ntawm qhov siab ntawm cov cua ntsawj ntshab nto, feem ntau qhov sib txawv ntawm qib yog li ntawm 0.05-0.1mm, tsis loj heev;
8. Qhov tsawg kawg ntawm cov tav tom qab kos duab tsis tuaj yeem tsawg dua 0.6mm, txwv tsis pub nws yog qhov nyuaj rau kev tsim;
9. Kev taw qhia ntawm cov qauv yuav tsum tau kos.
10. Lub kaum sab xis yog nyob ntawm qhov xav tau ntawm cov khoom. Thaum lees paub lub kaum sab xis ntawm daim duab (xws li lub hnub qauv, ci ntsa iab), qhov tob ntawm lub hnub qauv, lub kaum sab xis loj dua. Feem ntau, lub kaum sab xis yog hais txog cov qauv tsis muaj nyob hauv cov qauv board. Ua ib tsab ntawv.
11. Tsuas yog 1 hli, lub ntsej muag ncaj tsis tas yuav tsum tau kos, thiab qhov seem ntawm lub ntsej muag ncaj yuav tsum tau kos.