Qingzhou Sanhe Machinery Co., Ltd. is the professional manufacturer of Ventilation, cooling equipment, humidification and heating equipments in Asia area. It is a high-tech enterprise which has a completed set of specialized designing, manufaturing, installation, sales and after-sale service. We have gotten many titles such as "China Ten Top Brands Fan" "AAA Level of Nation Quality company" "Honesty and Qualitative Enterprise", The company strictly executes quality standard, and has passed ISO9001:2008 international quality system certification, and procedures are under strict standards or according to produce and test.