Shandong Meianda mechanical &electrical Co., LTD. capturing mechanical and electrical industrial park at Zhongxin town In early 2010, , covering an area of 12 acres, the total investment of 37 million yuan(RMB), with three patent projects, 6 technology research and development personnel persons, company and China Coal science research institute, shandong KuangYuan and a number of research institutes has a cooperative relationship. The company mainly engaged in coal mine safety rescue equipment, protective equipment, mining and mechanical and electrical products in the research and production, the company and the state MeiKe institute of research and development in coal mine portable