In fact, any type of bent coating, usually made of galvanized sheet metal and used to cover various points of work, is called flushing.

A roof sandwich panel is a type of external roof covering that is made of lightweight materials.

A sandwich wall panel is a type of interior or exterior wall separating coating that is made of lightweight materials.

Cold storage doors, like the body of the cold storage, are made of sandwich panels with a polyurethane foam core to prevent heat exchange as well as other components of the cold storage.

Air ducts or channels are used in air conditioning to supply or remove air. The required airflow can include supply air, return air, and exhaust air.