Dab tsi yog qhov yuav tsum tau ua kom pom qhov zoo ntawm cov yeeb yaj kiab aluminized rau kev ntim khoom sib xyaw? Aluminium txheej yog qhov sib xws thiab ci ntsa iab, tsis muaj kab dej, huab thiab pos huab; tus naj npawb ntawm pinholes tsis tshaj 5 ib square meter; coiling yog du, qhov nruj tsim nyog, thiab tsis muaj qhov hnyav ncab thiab nruj nruj.
