Yam Taw Qhia:

10cm Ncaj Nraim Ntiv Nplhaib Insulator rau Hluav Taws Xob
Ntsia rau hauv cov laj kab ntoo thiab yuav tuav hlua lossis xaim ib ncig 10cm deb ntawm kab ntawv.

daim ntawv thov: