KHAWV KOOB ICE
Cov dej khov nab kuab iav yog txheej txheem laminated rau peb lossis ntau daim iav sib xyaw, thiab siv cov txheej txheem tshwj xeeb, nruab nrab txheej tawg, txawm tias lub iav zoo li ntau, yog qhov tseeb tag nrho iav. Cov dej khov iav tawg tsis yog tsuas yog cov txuj ci loj hauv tsev cov khoom siv, thaum ob lub UV, hluav taws xob rwb thaiv tsev, suab rwb thaiv tsev, mos txwv thiab lwm yam, qhov kev ua haujlwm ntawm lub tsev muaj kev nyab xeeb thiab dav, zoo nkauj thiab txawv tshaj plaw.
