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Kingyes ntuj lub ntsej muag sib sib zog nqus huv daim npog qhov ncauj npuas
Qhov no yog silicone txhuam npuas npog ua los ntawm H2C03 carbonate.Siv tau rau: pob txuv ntau zaus, xim me ntsis, tawv nqaij qhuav, tsaus nti thiab npub, qhov pores loj thiab lwm yam teeb meem ntawm daim tawv nqaij.Yog "lub tshuab nqus tsev vacuum" ntawm daim tawv nqaij pores.
