Yam Taw Qhia:

20cm Ncaj Nraim Ntiv Nplhaib Insulator rau Hluav Taws Xob
Ntsia rau hauv cov laj kab ntoo thiab yuav tuav hlua lossis xaim ib ncig 20cm deb ntawm kab ntawv.

daim ntawv thov: