Located alongside East Huanbao road No.158 of Hunan Industry Zone of Environment Science and Technology, Hunan Zheng Da Qing Ke Hi-tech Machinery Co., Ltd is a private-owned high technology company and holding the two wholly owned subsidiaries which are Hunan Zheng Jia Special Materials Co., Ltd and Hunan Quality Environment Protection Equipment Co., Ltd. Zhengda Qingke Hi-tech covers a total area of nearly 58, 000m² (43, 000 m² for workshop area, 15000 m² for Office area) and owns about 300 working members among which 80 are technical personnels, including 16 senior engineers, 48 medium grade engineers.