Distribution box signage yog ib qho tseem ceeb ntawm lub hwj chim system. Nws ua lub luag haujlwm tseem ceeb hauv kev qhia, ceeb toom, thiab txheeb xyuas, kom ntseeg tau tias cov neeg ua haujlwm tuaj yeem txheeb xyuas cov haujlwm thiab cov xwm txheej ntawm lub thawv xa khoom sai thiab raug. Cov paib feem ntau yog ua los ntawm cov khoom siv cuam tshuam kom pom tseeb txawm tias nyob hauv qhov chaw qis - teeb. Peb lub khw tam sim no muaj kev cai- ua kos npe raws li cov duab muab; seb nws loj, xim, lossis cov ntsiab lus, peb tuaj yeem ua tau raws li koj qhov kev xav tau tshwj xeeb.