What is a "competent body" for the certification of the quality (assurance) systems of material manufacturers?

对于材料生产商质量体系认证而言，什么是权力机构认证？

youdao

What is a "competent body" for the certification of the quality (assurance) systems of material manufacturers?

对于材料生产商质量体系认证而言，什么是权力机构认证？

youdao