Jargon: Local certificate is called general inspection, and national standard certificate is called national inspection. Local appraisal certificates are generally issued by provincial capital city quality appraisal institutions (some municipalities directly under the central government, such as Beijing, etc. ), and the identification results are absolutely no problem if the documents are ok. The national standard certificate is appraised by the national specialized appraisal organization, which is relatively strict and has one or two more appraisal processes.