ua
Ib qho kev sib txuas ua ke ntawm lub kaus mom lub qhov (socket) thiab ib lub phaj ob lossis ib qho khoom dai
feem ntau yog siv rau hauv kev sib txuas hluav taws xob
Kev faib tawm: W hom;WS type
Khoom siv: malleable hlau;kub-dip galvanized