Smic imports DUV lithography machine, this type of lithography machine can achieve 28 nm process chip, can also achieve 14 nm process chip, but 7 nm process is difficult, the yield is insufficient.
Smic has ordered an EUV lithography machine from asml, which can achieve a 7nm process or a 5nm process. However, it was not obtained because the United States blocked it.
Smic is currently the most advanced electronic equipment manufacturer in China, and the 14nm lithography machine developed by SMIC has not yet been put into production. Therefore, those above 14nm must be imported, and those below 14nm can be produced by themselves.