As many as 24 units of processing and refining facilities (smelter) of mining products has been operating by the end of 2017. The majority of smelters that have been operating are 15 nickel smelters and refining facilities, followed by four iron smelters, two bauxite smelters, two manganese smelters, and one copper smelter. In the future, the construction of processing facilities and refining of mining products will continue to grow.