Zhengzhou Oriole Electronic (Group) Joint-Stock Co., Ltd (Originally the state-owned 4057 factory), established in 1969, located in Zhengzhou City-capital of Henan Province, is a large enterprise of holding company owned by the state, national large secondary advanced enterprise, and Henan excellent high and new technology enterprise. The company specializes in the research, production and marketing of new high-tech fogging machine, ULV sprayer etc pests prevention & control and plant protection equipment.