Which company is Liu Youcai from? General manager of Shandong David

Mr. Liu Youcai: 1966, born in junior college, once served as deputy director of Wendeng Precision Machine Tool Accessories Factory, deputy general manager of Shandong David Machine Tool Group Company, and director and general manager of Shandong David Machinery Co., Ltd.; He is currently the director and general manager of Shandong David Machinery Co., Ltd., the executive director of Shandong David Powder Metallurgy Co., Ltd. and the vice chairman and general manager of Shandong David Ruim Machinery Co., Ltd.