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�����������옙na Ten Top nterprise. Fan AAA Levels of National Quality Company Honesty and Qualitative Enterprise.The company strictly executes quality standard , and has passed ISO9001:2008 international quality system certificaiton , and all procedures are under strict standars or according to the customers to produce and test. Our company is located in Qingzhou ,Shandong Province., a developing city with long history.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. Company has strong technology strength, and has established long-term close cooperation with Nanjing University, Xi'an Jiaotong University, Shanghai University of Technology, Huazhong University of Science and Technology and some other domestic institutions which have created good platform for the company's technological innovation, product research and development .In present, company has the products of poultry fan, negative pressure fan, exhaust fan, greenhouse fan, cooling pad, automatic fuel, coal, gas, electric heater, dryer which contains 60 series over 200 varieties of specifications. The company has been a scientific-management ,well-operating cooperation in the industry Our products are widely used in agriculture and industry ventilation cooling system and heating system. Application for: animal husbandry, poultry house, livestock breeding, flowers and plants, greenhouse, factory workshop, textile, chemical, medicine, tea, vegetable storage, and supermarket. Nowadays, Our products have passed national CCC certification , and DJF serie