Press Brake, Shearing Machine, Duct Machine manufacturer / supplier in China, offering DCP-1250t Electric Elbow Making Machine for Round Duct Making, DCP-1000t Electric Elbow Forming Machine for Spiral Air Duct Elbow Fomring and Seaming, 1300mm Square Duct Beader HVAC Duct Beading Machine with Auto Duct Line Beader and so on.