Qingzhou Sanhe Machinery Co., Ltd. is the professional manufacturer of ventilation, cooling equipment, humidification and heating equipments.It is a high-tech enterprise which has a completed set of specialized designing, manufacturing, installation, sales and after-sale services.We have gotten many titiles such as"China Ten Top interprise". Fan AAA Levels of National Quality Company Honesty and Qualitative Enterprise,we are the first manufacturing company which passed the CE certification in China.