Zhengzhou Gongda heavy Machinery Co., Ltd. was established in 1958 and the original name was Mining Genreal Machinery Factory. We are a joint-stock mining machinery manufacturing enterprise which integrates scientific research, production and marketing, located in High & New Technology Industry Development Zone of Zhengzhou City. In order to promote more competitive strength, we have introduced advanced production technology concepts from America, Germany, Japan and Australia. The technical support of our company can help our customers avoid any accidents which may influence production. We...