·Imported FRP fans are divided into five types:54", 50", 36", 24", 18";

·FRP frame, rust proof and corrosion-resistant, long service life, including air duct;

·PG material fan leaf, PVC material shutter;

·54"and 50"fans are belt driven, and elastic tensioning device is used to maintain constant belt tension;

·36", 24"and 18"fans are of direct connection transmission structure, which is efficient and energy-saving.