Cov ntsiab lus muaj nuj nqi thiab ib feem ntawm cov txheej txheem ua:
1. Yuav ua tiav daim ntawv ntxuam-ntawv npuag ntawv nthuav tawm (daim ntawv nthuav dav ntawm lub khob) rau hauv cov ntawv ntawm lub khob ntawv.
2. Lub phab ntsa ntawm daim ntawv khob yog sib txuas nrog ultrasonic vuam dej (ntau dua huv thiab ib puag ncig tus phooj ywg).
3. Hauv qab ntawm daim ntawv khob, ntawv yob yog siv rau qhov tsis siv neeg ntawv noj thiab xuas nrig ntaus.
4. Kev khi ntawm lub khob ntawm lub cev thiab hauv qab: cov cua kub ntswj tshuab.
5. Knurling: Thaum lub khob hauv qab ntawv khob yog glued, txheej txheej ntawm cov ntawv luam tawm yog dov los ntawm kev txav zog.
6. Crimping: Qhov curling ntawm lub qhov ncauj ntawm daim ntawv khob yog tsim.
