Guizhou Ventilation Pipe

Tianrun Yer TubA cɔl round variable tube, tube's bottom and upper body shape is round and square, and generally applies to different structures components, such as round ventilation tube and fan exit, air conditioning unit and fan entrance and other aspects of connection. A cɔl round variable tube, tube's bottom and upper body shape is round and square, and generally applies to different structures, such as round ventilation tube and fan exit, air conditioning unit and fan entrance and other aspects of connection.