90 nanometers. The United States has drawn Japan and the Netherlands to form the so-called blockade alliance, and even DUV lithography machines for mature processes are trying not to sell to Chinese chips, preventing the development of Chinese chips, Shanghai Kunshan with Xingda Technology has two domestic lithography machines settled in the production line, and Shanghai Microelectronics independently developed 90 nanometer lithography machines. Kunshan Tongxingda Chip Encapsulation Technology Co., LTD., founded in 2021, located in Suzhou, Jiangsu Province, is an enterprise mainly engaged in computer, communication and other electronic equipment manufacturing.