Hunan Dinghan Environmental Protection Technology Co., Ltd. is a recognized National High-Tech Enterprise specializing in the R&D, manufacturing, installation, and global service of premium HVAC ventilation and industrial air purification systems. Holding multiple invention patents and strategic R&D collaborations with top-tier institutions like Central South University, we continually drive innovation to deliver highly efficient, energy-saving clean air solutions worldwide.

Hardcore Manufacturing Capabilities
Our modern 5,000+ square meter manufacturing facility is fully equipped with advanced CNC punching, laser cutting, and precision bending machinery, ensuring exceptional production efficiency and rigorous quality control. Today, our diverse product portfolio supports diverse commercial and industrial applications globally, featuring an annual capacity of:
10,000 Units of Air Heat Recovery & Fresh Air Systems (HRV/ERV)
6,000 Units of Purification Fresh Air Units & Air Handling Units (AHU)
5,000 Units of Industrial Fume Extractors & CNC Oil Mist Collectors
4,000 Units of VAV Boxes & HVAC Accessories

As global demand for cleaner workspaces grew, Dinghan transitioned from local engineering services to world-class manufacturing. By 2019, we established our own advanced factory, transforming years of field experience into high-performance equipment. From combating harsh winter climates with specialized Heat Recovery Ventilators to removing dangerous sub-micron particles with our Laser Fume Extractors and CNC Oil Mist Collectors, we built our product line based on real-world problems.

For Dinghan, clean air is not just a product we manufacture. It is a promise we keep for every worker, every workshop, and every single breath.

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