Iron in the second board Co., Ltd. is by the China Railway Bureau Group Co., Ltd. as the main sponsor, United Railway Ministry of Baoji Bridge Factory (now iron Po Bridge Co., Ltd.), Chengdu Railway Bureau, Ministry of Railways the second survey and Design Institute (now China Railway Eryuan Engineering Group Co., Ltd), Southwest Jiaotong University etc. four promoters, CO sponsored the establishment of a company limited by shares. The company's cranes and other construction machinery operating teaching equipment in the enterprise internal training and staff training to enhance the quality of training in a wide range of applications and promotion.