Glorious Course 1. Enterprise Development In October 1969, Zhaoyuan County Gold Machine Repair Factory was founded; In May 1987, Zhaoyuan County Gold Machine General Factory was used; In May 1992, Zhaoyuan Gold Machine General Factory was used; In June 1998, Zhaoyuan Gold Machine General Factory Co., Ltd. was used after institutional reform; In June 2007, Zhaoyuan Huadong Heavy-duty Mining Machinery Co., Ltd. was founded; In May 2013, our company was relocated in Mining Machinery ...