Laboratory accreditation 1 authorized signer has seven assessment requirements and corresponding work experience; 2. Have corresponding responsibilities and rights; Familiar with or master the corresponding detection technology and laboratory system management procedures; Familiar with or master the corresponding technical standards and methods in the signature field; 5. Be familiar with the review and release procedures of test reports; 6. The ability to judge the test results accordingly; 7. Familiar with measurement certification/examination and approval (acceptance) evaluation criteria and requirements of relevant laws, regulations and technical documents.