Kwa tubular defrost heater ndi waya wotenthetsera wa silicone, anthu ambiri asokonezeka, onsewa amagwiritsidwa ntchito pakuwotcha, koma asanagwiritse ntchito kuti adziwe kusiyana pakati pawo. M'malo mwake, akagwiritsidwa ntchito pakuwotcha mpweya, onse amatha kugwiritsidwa ntchito mofanana, ndiye pali kusiyana kotani pakati pawo? Apa pali deta...
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