Liab, dub, dawb, kub, xim av tsib xim nplua nuj, cov thawv ntim tau sib nqus nrog lub plhaub sib nqus/siv cov ntawv nplaum txuas kom ntseeg tau tias muaj kev nyab xeeb haum, qhov tshwj xeeb ntawm folding yog tias nws txo qhov chaw cia thiab txo qis kev thauj khoom ntau. Cov nplaim ntawm cov khoom kuj tuaj yeem raug kho raws li koj tsim. Cov xim thiab qauv tuaj yeem ua raws li koj tsim, lub thawv ntim khoom plig yog qhov txuas ntxiv ntawm kev xav tau ntawm kev ntim khoom. Nws tsis tsuas yog muaj lub luag haujlwm ntawm ntim khoom, tab sis tseem hais txog tus nqi ntawm cov khoom lag luam rau qee yam. Kev zoo nkauj ntawm lub thawv khoom plig yog sib piv rau kev nce nqi ntawm cov khoom lag luam thiab muaj lub zog muaj zog hauv kev ua kom zoo nkauj cov khoom lag luam thiab nyiam cov neeg siv khoom.