所谓三类企业是指冶金行业的国有企业、国有资产控股公司和上市公司。对冶金三类企业来说，搞好证券投资具有深远的意义。 一是可以拓宽企业经营渠道，扩大投资领域，弥补单纯搞冶金产品经营的缺陷。 二是可分享高速成长的中国证券市场所带来的稳定的投资效益。虽然随着证券市 The so-called three types of enterprises refer to the state-owned enterprises in the metallurgical industry, state-owned assets holding companies and listed companies. For the three types of metallurgical enterprises, it is of far-reaching significance to do a good job in securities investment. First, it can broaden the business channels, expand investment areas, to make up for the simple management of metallurgical products defects. Second, it can share the stable investment returns brought by the rapid growth of China’s securities market. Although with the stock market