求翻译：义马煤业集团股份有限公司（义煤集团公司）是全国特大型企业，也是国家经贸委确定的520家国有重点企业之一。义马煤业（集团）有限责任公司的前身是义马矿务局，始建于1958年，经过几代义煤人的辛勤建设，企业面貌日新月异，曾两次被命名为中国煤炭工业优秀企业，荣获金石奖。在2004年中外企业文化建设峰会上，义煤集团被中国企业文化研究会授予全国企业文化建设实践创新奖。是什么意思？

Yima coal industry group company limited (meaning coal group company) is a national enterprise, is one of the 520 key State-owned enterprises of the State economic and Trade Commission determined. Yima coal industry (Group) company limited, formerly known as yima mining Bureau, founded in 1958, after generations of coal of hard construction, enterprises face ever-changing, has twice been named the outstanding enterprise of coal industry in China, won the KBS award. In the 2004 Summit on enterprise culture construction in China and abroad, corporate culture research association grant by China National Coal Group company culture construction innovation award.