Cov xaim hluav taws xob pab neeg sib koom ua ke zoo ib yam li kev sib txuas thiab tuaj yeem hloov kho thaum nws xav tau kho lossis hloov. Qhov kev txo cov xov xwm yooj yim tau yooj yim rau disconnect thiab txuas, thiab tuaj yeem ua haujlwm ntau zaus. Hom xov xwm suav nrog NPT, PT, BSPP, BSTPT, thiab PF.
