Source From  : Standardization Administration of the Peoples Republic of China

Updated Date : 2007-07-25  

Chinese standards are divided into National Standards, Professional Standards, Local Standards and enterprise Standards.

1. National Standards shall be developed for technical requirements need to be unified national wide.

2. Professional Standards may be developed for which no National Standards are available but unified technical requirements are needed in a certain professional field throughout country.

3. Local Standards may be developed for which neither National Standards nor Professional Standards are available, but unified requirements for safety and hygiene of industrial products are needed within a local area.

4. Enterprise Standards may be developed within an enterprise when National Standards, Professional Standards and Local Standards aren't available. However, an enterprise is encouraged to adopt National Standards, Professional Standards and Local Standards if they are available.

Moreover, national advisory technical documents may be developed for some developing projects, which are required relevant guiding standard documents or have standardization value but can't be developed formal standards or adopt ISO/IEC and other international standards at present.