The company is a high-tech company specializing in the design, development and manufacture of ventilation and air handling system equipment and accessories such as ventilators and ventilation and cooling systems. The main business is engaged in R&D, production, sales and related maintenance services of ventilation equipment products and systems in high-end equipment industries such as rail transit ventilation and cooling equipment, energy ventilation and cooling equipment, marine engineering and ship fans, cooling tower and air cooler fans, and refrigeration fans.