Dab tsi yog Joint Compound lossis av nkos? Kev sib koom ua ke, feem ntau hu ua av nkos, yog cov khoom siv ntub dej uas siv rau cov phab ntsa ntub dej kom ua raws li daim ntawv sib koom ua ke, sau cov pob qij txha, thiab rau sab saum toj daim ntawv thiab mesh sib koom ua ke, nrog rau cov yas thiab hlau kaum hlaws. Nws tseem tuaj yeem siv los kho qhov thiab cra ...
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