khob dej ncaws pob rau cov khoom xav tau kuj pom tseeb, peb feem ntau haus lub khob hauv lub neej feem ntau ntawm cov iav ceramic khob yuav xaiv ob hom khoom, thiab raws li peb txhua tus paub, ob hom iav sealing kev ua tau zoo tsis zoo, tshwj xeeb tshaj yog cov khoom siv ceramic. khob, thiab lwm yam yog ob hom iav khoom. Cov yam ntxwv tsis yooj yim kuj tseem txwv lawv txoj kev siv, vim hais tias lub khob muaj qhov xav tau siab rau kev sib khi thiab kav ntev ntawm lub khob, uas yog doomed rau cov iav khoom thiab cov khoom siv ceramic uas tsis haum rau kev tsim khoom.khob dej ncaws pob.
