Abstract
National institute of advanced science and technology (AIST) has developed network database system for thermophysical properties data (TPDB) and opened it on internet. In addition, Japan society for thermophysical properties launched thermophysical properties database whose system is same as AIST one. These database systems are available through installation database software "InetDBGV" and TPDS-web/full program running on web browser. From TPDB version 3.0.6, multiple concurrent connection and cross searching function were equipped with InetDBGV. Because of these functions, InetDBGV comes to play a role of integrated system.