Ntxiv nrog rau kev xaiv qhov siab - cov kua roj insulated hnab, koj tuaj yeem txuas nws lub neej los ntawm:
1) Soak lub hnab hauv dej kub ua ntej siv tuaj yeem txhim kho nws txoj kev ua rwb thaiv tsev rwb;
2) Ntxiv cov ntaub ntawv txias, xws li cov khoom siv dej txias lossis dej khov, rau lub hnab tuaj yeem qeeb qeeb ntawm;
3) Yog tias koj yuav tsum tau ua kom sov so rau lub sijhawm ntev, xaiv ob npaug-}}}}}}}} ins ins ins layerောင်း hnab lossis siv cov khoom siv tshwj xeeb, xws li cov thoob insulated.