Ceiling Channel Roll Forming Machine, is very popular and welcome for the public space ceiling Machine, straight line view and various shape can be produced. Widely applied at airport, metro station, shopping mall and other commercial building area, etc. Common shape and size would be the U shape in 20-200mm. is very popular and welcome for the public space ceiling projects because of easy installing, straight line view and various shape can be produced. Widely applied at airport, metro station, shopping mall and other commercial building area, etc. Common shape and size would be the U shape in 20-200mm.