Ny fotoana fanoherana ny afo amin’ny varavarana afo vy Grade A dia tsy tokony ho latsaky ny 1.5 ora, ary ny hatevin’ny varavarana afo Grade A dia amin’ny ankapobeny 50 mm. Ny perlite dia matetika ampiasaina ao anatiny, ary fitaovana kely misy refractory toy ny vermiculite afo-porofo birao, foam varavarana fototra birao, sns.

varavarana bd naoty afo,vy sliding varavarana famolavolana, vy na fiberglass varavarana,varavarana metaly,hidin-trano vonjy maika,vy sliding varavarana,

varavarana metaly,varavarana metaly,varavarana vonjy maika vaky fitaratra, varavarana mahatohitra afo ho an’ny trano,varavarana vy sliding,20 minitra afo voamariky ny varavarana,varavarana bd naoty afo,

varavarana naoty afo bd,fitsapana varavarana tsy misy afo, tobin-baravarana naoty afo,varavarana vy sliding,fenitry ny varavarana mahatohitra afo,varavarana metaly