Lockforming Machinery Co., Ltd. is a professional manufacturer specializing in the design, development, and production of HVAC duct manufacturing machines and sheet metal processing equipment. With 17 years of industry experience, we are committed to providing high-quality machinery and innovative solutions to customers worldwide. Our product range includes: All Duct lines  Spiral duct machines  CNC plasma cutting machines  Fire damper machine  VCD machines  C channel forming machine  Manufacturing Capability Our factory is equipped with advanced production equipment, modern assembly lines, and a skilled te...