Yankuang Group Company Limited, restructured from Yanzhou Mining Bureau, was established in 1976. It is the fourth largest coal mining state-owned enterprise in People's Republic of China. In 1999, Yanzhou Mining Bureau was renamed to Yankuang Group Company Limited. It is not only engaged in coal production and sales, coal chemicals, civil engineering, machinery manufacturing, transportation and electricity, but also garment business and trade. Its headquarters is located at Jining, Shandong.