... machine. In 2005, after National key enterprises China National Erzhong Group, China National Yizhong Group, Taizhong, Shenzhong, it designed and manufactured ... , Wuyang Steel, Jinan Steel, An Steel, Jiuquan Steel, Kunming Steel, Laiwu Steel, Handan Steel etc. successively. Its stable ... Steel & Iron Co., Ltd., Benxi Beitai Steel Company, Kunming Yuxi Steel & Iron Company, Jingxi Steel & Iron Limited ...