The 5nm lithography machine can only be produced by ASML in the Netherlands. The top chips are 5 nm, and the domestic can do 28 nm at present. As the chip industry is paid more and more attention, people's understanding of the chip is mostly focused on the 5-nanometer process that is vigorously promoted by mobile phone manufacturers. And China's lithography machine technology has been lagging behind the international community, we have not yet developed a 5-nanometer lithography machine, most domestic lithography machine can only produce 28 nanometers. However, most of the chips above 28nm can be produced in China.