The first international convention of GBG company with presence of foreign businessmen from 8 countries
(Georgia, Syria, Pakistan, Russia, Kazakhstan, Iraq, Lebanon, Qatar)
On February 16, 1977 for 3 days with the presence of domestic companies and foreign businessmen as well as the management and personnel of Moman Abad Gypsum Company in Semnan International Conference Hall of IRIB in cooperation with GBG Company. The contract was signed with foreign businessmen.