Zhejiang Zhuji DunAn Heat Exchanger Co., Ltd ,established in 1995, is a joint venture company subsidiary to China Dun An Holding Group.It is a specialized manufacturer of heat exchangers for various air-conditioner, refrigeration system and air handling system.The products are widely used in such conditions as commercial air conditioner, military air conditioner,commercial refrigeration, domestic air conditioner, refrigeration container, cooling tower, metro/bus/truck air conditioner,large-scale control cabinet air conditioner, industry dryer equipment, air handling unit.The company is now equiped with many product patents, with production ability of over 100,000 sets per month .user name: franking112 at hotmail