For the implementation of China's accession to the WTO commitments on accession to the WTO, to adapt to the needs of the development of the market economy in China, the establishment of international standards and technical evaluation mechanism, China according to the four unified principles established China compulsory product certification system (CCC).CCC is full quality licensing system (CCIB) safe on the original import and export goods, safety certification mandatory supervision system (Great Wall), network license system, licensing system, industrial products production license system in whole or in part replaced.

National certification and accreditation according to the duties entrusted by the State Council, in December 2001, 3, announced a mandatory product certification system. Since May 1, 2002 onwards, began to accept the first included in the mandatory product certification directory 19 categories of 132 kinds of products certification application.

In May 1, 2002, the certification of these products began to implement law enforcement supervision (now postponed until August 1st).