Taw qhia txog cov khoom siv roj hmab sealing

Tiv thaiv kom tsis txhob muaj cov kua dej nruab nrab los ntawm cov khoom kaw, thiab tseem tiv thaiv cov plua plav sab nraud, cov khib nyiab thiab huab cua (rau lub tshuab nqus tsev) los ntawm kev nkag mus rau cov khoom siv roj hmab hauv cov khoom kaw. Txawm hais tias hom foob no me me, nws ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev ua tau zoo ntawm ntau yam khoom siv thiab chaw, txuag cov ntaub ntawv thiab lub zog, thiab tiv thaiv kev ua qias tuaj ib puag ncig. Nws yog dav siv nyob rau hauv ntau yam machinery, instruments, kav, khoom siv hauv tsev, tsheb thiab lwm yam kev thauj mus los, raws li zoo raws li nyob rau hauv kev tsim kho kev lag luam.