By the end of 2019, there are more than 30 kinds of proven minerals in Ordos City, especially the famous high-quality coal. Dongsheng coal field has proven reserves of 72.7 billion tons. Together with Shenfu coal field, it is one of the eight largest coal fields in the world, known as the "sea of black gold". The proven reserves of clay are 433 million tons, kaolin 6.5 billion tons, quartz sand 42.26 million tons, limestone, dolomite, building clay and other building materials resources are amazing.