Ny hatevin’ny ravin’ny varavarana vy amin’ny afo dia mizara ho fenitra telo, A, B, C, ary manana feo insulation tsara sy fampisehoana hafanana. Ny varavaran’ny afo vy dia azo omena amin’ny varavarankely, fanakanana, fanakanana rivotra, sns. Tongasoa eto aminay.

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