Hemmer, Plate Shears manufacturer / supplier in China, offering Hydraucli Iron Worker Machine with Punching and Shearing Multi-Functionduct Making Machine, Air Conditional Part Beading Cutting Machine for Duct Thin Sheet/Portable Galvanized Sheet Shearing Machine, Pneumatic Auto Square HVAC Air Duct Pittsburgh Zipper Lock Seam Closing Machineduct Making Machine and so on.