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ISO system certification team experts conducted certification audit on the operation of Aigre's ISO9001 management system from April 3th to 4th. The certification team checked the establishment, implementation, maintenance and continuous improvement of the company's management system by reviewing documents and records, visiting the site and communicating conseling. They gave positive affirmation to the operation of the system and enterprise management through comprehensive evaluation, and has put forward improvement suggestion for some inssues that existing in the on-site audit.