自１９９９年１２月１日起，我国水泥行业水泥产品新标准的执行进入过渡期。２００１年４月１日，原标准正式废止，新标准ＧＢ１７５—１９９９强制执行。在新标准过渡期间，我们同各地水泥企业一样都作了大量的研究、试验工作，并将结果付诸生产实践，取得了显著的成效。围绕 Since December 1, 1999, the implementation of the new cement product standard in China’s cement industry has entered a transition period. On April 1, 2001, the original standard was officially abolished and the new standard GB175-1999 was enforced. During the transition period of the new standard, we have done a lot of research and testing work with cement companies all over the country. We have put the results into production practice and achieved remarkable results. around