Changsha Kaifu District Hunan No.27 Concrete Machinery No.49 Ye Ya Chuan Dong No.49 Hydraulics Technology No.50 Hydraulics Engineering No.52 Hydraulics No.93 Zhong Industrial Ji Xie Ling Accessories Construction Machinery Ji Xie Ling Components Zhong Engineering Production Equipment Ling Accessories 科技型中小企业 省科技型中小企业 高新技术企业 省级高新技术企业