天辰公司在全国勘察设计行业中首家通过ＩＳＯ９００１质量体系认证中国天辰化学工程公司早在１９９２年６月即开始实行以设计为主体、以工程承包为模式的ＩＳＯ９０００系列标准的贯标工作，经过一年多的试运行，于１９９４年１月正式向长城（天津）质量保证中心提出了质... Tianchen Company was the first company in the national survey and design industry to pass the ISO9001 quality system certification. China Tianchen Chemical Engineering Co., Ltd. began implementing the ISO9000 series of standards that focused on design as its model and project contracting model as early as June 1992. More than one year of trial operation, in January 1994 formally submitted a quality assurance to the Great Wall (Tianjin) Quality Assurance Center...