All 4 products from DER International Investment Trade Co., Ltd..

This centrifugal exhaust fan is designed for industrial and commercial ventilation applications. It features a galvanized steel frame and impeller for durability and corrosion resistance, along with a high-efficiency motor for optimal airflow.

This butterfly cone fan maximizes air volume within poultry and livestock houses. Its design features a galvanized steel frame and precision-engineered fan blades.

This industrial evaporative air cooler delivers 18000CMH airflow and is designed for spaces of 100-150 square meters. It operates on a 3-phase power supply with a single-speed setting.

This evaporative cooling pad is designed for poultry houses, providing efficient cooling and humidification. It is constructed from cellulose paper, treated with resin, and features a cross-fluted design for optimal water absorption and evaporation.