UAS accredits product certification bodies on the basis of the ISO/IEC 17065 standard.Product certification bodies determine whether products, services or manufacturing processes meet requirement. A major difference is that they do not just inspect a single sample or a single batch but they also inspect the company. They also assess subsequent products to verify if a batch of products meets the specified requirements for example? And verify the consistency if the next batch is produced in the same way. Complying manufacturers can use the relevant mark. A product certifying body continues to provide ongoing supervision.