A damper is a machine used to measure the airtightness of a building. It can also be used to measure airflow between building areas, test the airtightness of ductwork, and help physically locate air leaks within the building envelope. [1]A blower door consists of three main components: (1) a calibra

Axial flow fans and centrifugal fans are two different products in the fan category. PP Tubeaxial Fan supplier-xunling​The main functions are also equipment for ventilating the air in the environment.

A damper is a machine used to measure the airtightness of a building. It can also be used to measure airflow between building areas, test the airtightness of ductwork, and help physically locate air leaks within the building envelope. [1]A blower door consists of three main components: (1) a calibra

Axial flow fans and centrifugal fans are two different products in the fan category. PP Tubeaxial Fan supplier-xunling​The main functions are also equipment for ventilating the air in the environment.