芯片设备大厂，遭重挫

Group 1 - The U.S. Department of Commerce has revoked the authorization for Samsung Electronics and SK Hynix to use U.S. equipment for chip production in China, impacting U.S. semiconductor equipment stocks negatively [2][3] - The announcement also rescinded Intel's exemption, although Intel had already sold its NAND flash memory plant in Dalian to SK Hynix earlier this year [2] - The new regulations will only allow Samsung and SK Hynix to procure U.S. equipment necessary to maintain existing operations in China, prohibiting licenses for expansion or upgrades [2][3] Group 2 - The revocation of authorization is expected to take effect in 120 days, coinciding with a period of suspended U.S.-China tariffs, with U.S. tariffs on Chinese imports locked at 30% and Chinese tariffs on U.S. imports at 10% until November [3] - Samsung's Xi'an plant produces 35-40% of its total NAND flash memory output, while SK Hynix produces approximately 40% of its DRAM in Wuxi and 20% of its NAND flash memory in Dalian [3] - The change in authorization is likely to reduce sales for U.S. semiconductor equipment manufacturers such as KLA Corporation, Applied Materials Inc., and Lam Research Corp., which saw stock declines of 2.46%, 2.73%, and 3.79% respectively [3]