Recognizing that high-quality spiral ducts require highly efficient duct fabrication equipment, we continuously invest resources to maintain our manufacturing capabilities. We operate four modern production workshops totaling over 20,000 m2, covering the entire manufacturing process: assembly, machining, sheet metal processing, and welding. This ensures stable production and delivery of our spiral duct machines. The duct machine workshops are equipped with over 50 advanced CNC machines, including laser cutting machines, CNC gantry machining centers, high-precision grinders, and boring machines, ensuring high precision and consistency from raw materials to finished products. Our team includes over a hundred employees, with dozens of engineers comprising our specialized R&D team. This complete production capability allows us to continuously pursue innovation and develop new duct manufacturing equipment.

For over twenty years, we have supplied spiral duct machines to more than 1,000 customers globally. DDJX Machinery confidently handles both standard models and fully customized solutions, relying on deep experience and technical accumulation. Our core proprietary products—including spiral duct machines, large corrugated metal pipe machines, CNC two-roller/four-roller duct rounding machines, duct elbow machines, round angle flange forming machines—hold dozens of patents, placing our technical strength at the forefront of the HVAC duct equipment industry. Notably, our spiral duct machines are widely used in environmental dust removal and fresh air systems, while our large corrugated metal pipe machines have been successfully deployed in major projects such as the Hong Kong-Zhuhai-Macao Bridge seabed sand stabilization pile foundations, culverts, wind power foundation pits, and urban drainage systems, earning recognized performance.