National standards (TCVNs) are developed on the basis of research, the application of
scientific and technological advances, and the adoption of international, regional
standards. TCVNs are developed by consensus, with participation of different interested
parties and stakeholders. They are used as the technical criteria for quality certification,
suppliers’ product conformity declarations, and quality inspection of imported and
exported goods. TCVNs are developed through technical committees and ministries with
the involvement of any interested parties and are intended for voluntary adoption unless
they were referenced in other laws and regulations as mandatory. Any public or private
organization or individual is bound to observe mandatory standards. The State
encourages the application of voluntary standards.