Sep 27, 2021 Metal Ore Mining Global Market Report 2020 - By Type (Gold Ore Mining, Iron Ore Mining, All Other Metal Ore Mining, Silver Ore Mining, Uranium Ore Mining, Vanadium Ore Mining), By Organization.Approved by the China National Commerce Ministry, established in 1986, located in Zhengzhou City, Henan Province, covering area about 300,000 square meters, with than 1000 employees which including R D staffs than 100 people, Henan Dewo is a comprehensive enterprise which integrates researching, manufacturing, market developing and service for mining crushing equipment.