Muaj ntau hom kev kho qhov muag tsis pom kev rivet xws li:
● Galvanizing (muab faib ua tus phooj ywg ib puag ncig, tsis yog ib puag ncig, ib txwm thiab xim zinc) tus nqi sib txawv heev.
● Xim pleev rau ci (kuj muab faib ua qhov zoo thiab qhov phem)
● kev ua kom tsis muaj zog
● Nickel plated
● Rhombus
● Kev kho mob zoo
Lub sijhawm tshaj tawm: Lub Rau Hli-08-2022