SEOUL, July 24 (Reuters) - South Korean chipmakers Samsung Electronics and SK Hynix will announce ‌large supply deals with U.S. technology companies ‌during President Lee Jae Myung's visit to San Francisco, a ​senior presidential official said. Kim Yong-beom, the president's policy adviser, told reporters on Thursday that the companies would unveil long-term memory chip supply contracts with global ‌technology partners. Kim ​said global ​technology companies would also ​announce "strategic investments" in artificial ‌intelligence data centres, but did not provide details. In San Francisco, Lee ​is scheduled to meet ​U.S. He will ​also attend ​an AI summit with South Korean business leaders, including Samsung Electronics Chairman Jay Y. Lee, ​SK Group Chairman ‌Chey Tae-won and Hyundai Motor Executive Chair ​Euisun Chung.