Cov iav worm shaft iav worm log siv rau hauvcov iav kablub thawv hloov pauv
1) Forging 8620 raw khoom rau hauv bar
2) Kev Kho Mob Ua Ntej Kub (Normalizing lossis Quenching)
3) Tshuab dhos rau qhov loj me tsis meej
4) Hobbing lub spline (hauv qab video koj tuaj yeem tshawb xyuas yuav ua li cas hob lub spline)
5)https://youtube.com/shorts/80o4spaWRUk
6) Kev kho cua sov carburizing
7) Kev Ntsuas