27th International Prefabricated Concrete Industry Congress, May 1-4, 200227th International Prefabricated concrete Industry congress that has been organized by cooperation of YEM and İkon Turizm A.Ş. has been carried out between May 1-4, 2002 in Istanbul Lütfi Kırdar Congress Center. 27th international congress of International prefabricated organization of concrete manufacturers, Bureau International du Béton Manufacturé-BIBM has been completed very successfully being hosted by Turkey Prefabricate Organization. Foreign-local 350 delegates in the congress have presented 58 statements in total in 13 sessions. Building Materials General Assembly year 2003, December 8-9, 2003In Building Material General Assembly organized with the cooperation of İMSAD Construction Materials Manufacturers Association and YEM, economical, technological and ecological future of construction materials have been discussed. More than 60 statements have applied to General Assembly took place on December 08 – 09, 2003 in Lütfi Kırdar Congress and Exhibition Center. Members of the sector and public organizations and institution authorities, members of universities and contractors have participated in the General Assembly.