Samsung, SK Hynix to be spared brunt of China chip crackdown by US

They still worry, however, that the case-by-case review standard is far from an explicit greenlight for U.S. equipment to be shipped to their Chinese facilities and could result in bickering with regulators over what shipments to approve.

Details of some of the new regulations facing China-based memory chipmakers have not been previously reported.

The new curbs target China-based producers of DRAM chips, which hold information from applications while the system is in use, and NAND chips, which are used for data and file storage.

U.S. suppliers seeking to ship equipment to China-based semiconductor firms would not have to seek a license from the Commerce Department if selling to firms producing DRAM chips above the 18 nanometer node, NAND Flash chips below 128 layers, or logic chips above 14 nanometers, the sources said.

However, U.S. companies selling sophisticated technology to indigenous Chinese chipmakers producing DRAM chips at 18 nanometers or below, NAND flash chips at or above 128 layers or logic chips at or under 14 nanometers would have to apply for a license that would be reviewed with the tough “presumption of denial” standard.

U.S. suppliers seeking to sell the equipment to non-Chinese origin companies operating in China and producing those same types of chips would also face a license requirement but the applications would be reviewed on a case-by-case basis, the sources added.

If published as expected, the rules would mark the first U.S. bid through export controls to target Chinese production of memory chips without specialized military applications, representing a more expansive view of American national security, according to export control experts.

They would also hit YMTC, a rising power in manufacturing NAND chips founded in 2016. Its expansion and low-price offerings represent “a direct threat” to U.S.-based Micron Technology Inc and Western Digital Corp, the White House said in a June 2021 report.

YMTC is already under investigation by the Commerce Department over whether it violated U.S. export controls by selling chips to Chinese telecoms company Huawei Technologies Co Ltd. Its chips are being evaluated by Apple Inc for inclusion in some of its iPhones in China, a major concern for U.S. lawmakers and the Biden administration.

The rules could also hurt CXMT, a state-backed Chinese company that is working to enter the DRAM market.

LAM Research Corp, Applied Materials Inc and KLA Corp, major U.S. vendors of equipment to make chips, are likely to be hit by the restrictions. LAM and Applied Materials did not respond to requests for comment. KLA declined to comment.

South Korea’s Samsung has a facility producing NAND Flash memory chips in China’s Shaanxi Province. South Korean rival SK Hynix has purchased Intel Corp’s NAND flash memory chip manufacturing business in Dalian and produces DRAM chips at another China-based facility.

According to consulting firm Yole Intelligence’s Walt Coon, 25% of SK Hynix’s and 38% of Samsung’s NAND wafer production is based in China, and about 50% of SK Hynix’s DRAM production is in China.

Reuters first reported that the United States was considering limiting shipments of American chipmaking equipment to memory chip makers in China including YMTC, part of a bid to halt China’s semiconductor sector advances and protect U.S. companies.

Reuters also reported last month that the Biden administration planned in October to broaden curbs on U.S shipments to China of semiconductors used for artificial intelligence and chipmaking tools.