根据国轻行[1999]12号文《关于发布轻工专业标准、清理整顿后的部分国家标准转化为轻工行业标准的通知》，从1999年3月1日起，轻工专业标怅（即ZBK标准）和清理整顿后转换为其他标准的国家标准，应全部停止按专业标准和国家标准使用，为了不影响社会上对以上标准技术内容的使用 According to the Circular of the State Light Industry [1999] No.12 on “Releasing the Standards for Light Industry Professionals and Clearing Some National Standards after Reorganization into Light Industry Standards”, starting from March 1, 1999, That is, ZBK standard) and national standards for conversion to other standards after cleaning and reorganization should all be stopped and used according to professional standards and national standards. In order not to affect the use of the above standard technical contents in the society,