Meta-model, meta-data, data element, information classification and coding, synthesis data dictionary in the field of information and information resource sharing. It also provides total standardization solutions of informatization engineering and standards drafting and revision. It serves as the secretariat for the Technical Committee for Standardization of Information Classification and Coding Standardization of China (in preparation), and is a liaison institution with ISO/IEC JTC1/SC32/WG2 (data element representation).