National Standards of the People's Republic of China

The '''National Standards of the People's Republic of China (), coded as ''', are the standards issued by the Standardization Administration of China under the authorization of Article 10 of the Standardization Law of the People's Republic of China.

According to Article 2 of the Standardization Law, national standards are divided into mandatory national standards and recommended national standards. Mandatory national standards are prefixed "GB". Recommended national standards are prefixed "". Guidance technical documents are prefixed with "GB/Z", but are not legally part of the national standard system.

Mandatory national standards are the basis for the product testing which products must undergo during the China Compulsory Certificate (CCC or 3C) certification. If there is no corresponding mandatory national standard, CCC is not required. Provided by Wikipedia