This series of dehumidifying units takes high efficiency and energy saving as the highest pursuit; takes stability and safety as the most basic principle; designs high-performance products in line with the current energy saving and environmental protection” as the new characteristic for users; this series of products are reasonably designed with compact structure; and has high energy efficiency, low noise, large air volume, safe operation, high reliability, and excellent matching performance of high-temperature place environment and waste heat recovery function.