Welcome to understanding"Heng Yuan"and hope that our products help you. Qingzhou Hengyuan Temperature--Controlled Equipment Co., Ltd is located in Qingzhou economic development zone. Our company have been committed to the development and promotion of national green energy_saving products for many years. It is a high_tech enterprise which has a completed set of engineering design, manufacturing. Installation and services. Our productive capacity and core technOlogiesOccupy first place in the same industry. Company has relatively strong production and research and development ability, Our main products include: Ventilation cooling system, such as large_scale poultry fan, large scale fan for greenhouse and factory buildings