Mandatory product certification system, it is governments to protect consumers and plant and animal life safety, protect environment, protect national security, in accordance with the laws and regulations on the implementation of a product conformity assessment system, it requires that the products must comply with national standards and technical regulations. Mandatory product certification, is by making a product catalogue and implementation of the compulsory product certification mandatory product certification program, for in the products listed in the catalogue of the mandatory inspection and audit. All products listed in the compulsory product certification directory, specify the certification body certification is not obtained, not according to stipulations and certification marks, shall import, shall not be sold for the factory and in the business services.

China Compulsory product Certification, also known as China Compulsory Certification (English: China Compulsory Certification, hereinafter referred to as CCC, can also be referred to as "3 c"), is the implementation of national standards of the People's Republic of China, the People's Republic of China state administration of quality supervision, inspection and quarantine (AQSIQ) and the China national accreditation supervision and administration commission (CNCA) based on December 3, 2001 published the regulations on the Compulsory product Certification (the state administration of quality supervision, inspection and quarantine to 5), performed by the CNCA, on May 1, 2002. According to the department authorized by the state council of the new country "by" certification and accreditation administration job functions, implementation of the compulsory product certification system. This system requires product certification must, in accordance with ISO/IEC guide 65 approved assessment, and should be authorized by the government. Supervisor committee of mandatory product certification, will enable a new unified "China certification mark" (CCC), a consistent inside and outside the new certification standards, to further improve and standardize market. General administration of quality supervision, inspection and quarantine authorized China import and export quality certification center (CQC) product certification (CCC) of the related work. At the same time, CQC according to ISO/IEC guide 65 assessment approval to carry out the compulsory product certification. CQC is general administration of quality supervision, inspection and quarantine according to the law of the People's Republic of China on import and export commodity inspection and the implementation regulations set of characteristics to the third party impartiality of certification institutions. CQC has joined the international certification alliance (IQNET) and the international electrotechnical commission electrician product qualification testing and certification organization (IECEE), and become China's national certification body (NCB).