1）ISO9000：2005《Quality Management SystemI. Basics and Terminology

2) ISO9001:2008 "Quality Management System - Requirements"

3) ISO9004:2009 "Guidelines for Quality Management Systems - Performance Improvement"

4) ISO 19011:2011 - Guidelines for Auditing Management Systems for Quality and Environmental Management

Standard provisions for the fundamental principles of quality and (or) environmental audits, the management of audit programs, the execution of audits of quality and (or) environmental management systems, and requirements for the qualifications of quality and (or) environmental management system auditors.