E company news, a few days ago, Beijing Mayor Chen Jining and other delegations visited Youyan Metal Composite Technology Co., Ltd. to visit and investigate. Chen Chunsheng, deputy general manager of Youyan Composites Company, focused on the application of aluminum matrix composite materials and fine crystal homogeneous aluminum alloy materials developed and produced by the company in the fields of national defense and military industry, automobiles, 5G communications, etc., and expressed the company's mission determination to provide key materials and parts for major national projects, national defense and military industry, strategic emerging industries, etc.