CEI UNI CEN/CLC ISO/IEC TS 17021-3/AB:2020 合格评定 对提供管理体系审核和认证的机构的要求 第3部分:审核活动和质量管理体系认证的能力要求
Conformity assessment - Requirements for bodies providing audit and certification of management systems Part 3: Competence requirements for audit activities and certification of quality management systems