Qingzhou Sanhe Machinery Co.,Ltd is the first productive enterprise in Shandong province entering the nationwide temperature control productive directory.It is a high-tech enterprise which specialized in designing,producing,installing,selling temperature control equipments and also in offering after-sale services. After several years of development, Sanhe Machine is one of the most popular in china.The factory occupied 30,000 m2 and the workshop area is 15,000 m2. We have an efficient team containing more than 300 workers .There are 60 engineers and six advanced engineers Nowadays, Our products have passed national CCC certification , and DJF series exhaust fan had got approved CE certificates of LVD and EMC Compliance. As the leader in this field, we are the first manufacturing company which passed the CE certification in China