The HY-500 provides excellent longitudinal ventilation for greenhouses. In modern greenhouses, ventilation plays a vital role. Air recirculation can evenly distribute heat flow in the greenhouse, facilitating synchronized growth of crops in all locations. With the improvement of modern greenhouse energy technology and the promotion of intensive cultivation, the necessity of temperature control for crops has become increasingly apparent. The GZAF-500 helps crop growers reduce the adverse effects of temperature in a simple and efficient way. Longitudinal and transverse airflow can provide a suitable climate environment for crop growth.