In March 2015, Chairman An Zhengang went to visit South Korea

       March 23, 2015 ~26, Chairman An Zhengang was invited to visit a number of companies and universities in South Korea, From Seoul and daejeon in the south to busan in the north. He visited South Korea's enterprises and universities, which developed the production of magnetic bearings and magnetic levitation blower, air suspension bearings and air suspension blower, suspension of high-speed motor, air suspension bearing high speed generator and Low temperature waste heat power generation system with this technology and other high-tech products. He has carried on the detailed technical communication with them, about their product development technology principle, characteristics and application situation. He also introduced the development of China and Liaoning Mingde company to them, hoping to cooperate with South Korean counterparts, mutual benefit and common development. After a full exchange, the two sides signed a comprehensive cooperation agreement, so that the company's development has added a new impetus.