It is a glass wool board that can be covered with yellow or black glass tulle and aluminum foil on one side. It is used for external thermal insulation of ventilation and air conditioning…
They are rock wool boards covered with aluminum foil on one side. It is used for external thermal and sound insulation of ventilation and air conditioning ducts and fire safety.
They are small air pouches, one side of which is covered with aluminum foil or black glass, providing fire safety of ventilation and air conditioning ducts, external thermal insulation…
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