Henan ProChange Machinery and Equipment Manufacturing Co., Ltd is a large joint-stock enterprise that mainly produces heavy mining machinery and integrates scientific research, production and sales. The company is located in Zhengzhou national high and new technology industry development zone, covering fifty thousand square meters, with two sets of 15,000 square meters standard heavy industrial workshops, all kinds of large, medium-sized gold processing, welding, assembly equipment more than 160 sets, online staff more than 660 people, including medium and senior professional titles with management cadres and engineering technology personnel more than 80 persons.