ISO9000 does not refer to a standard, but rather a family of standards collectively. "ISO9000" refers to by the ISO/TC176 developed by international standards. 

 The 1994 version of ISO9000 standard has been adopted for many years, including the following three quality assurance one of the criteria is often used as the use of external authentication: 

 ISO9001: 1994 quality system design, development, production, installation and service quality assurance model for their own product development, design features of the organization; 

 2. The ISO9002: 1994 quality system production, installation and service quality assurance model "for its own does not have the organization of product development, design features; 

 3.ISO9003: 1994 quality system final inspection and test quality assurance model "for the organization's Quality Assurance Ability relatively low. 

 Note: ISO9001: 1994 standard quality system is divided into 20 elements (ie, standard quality system requirements) to describe the ISO9002 standard ISO9001 standard, a "design control" elements.