Learned something about computer chips from this article,which gives us some insight into Taiwanas it relates to possible Chinese invasion.
ASML is a Dutch company who currenly makes the most advanced (and expensive) EUV lithography machines in the world. They have a monopoly on the technology, and the $200M machines are considered the most advanced machine ever made by man. Only 140 of these machines have been made in the past decade, only the world's top 5 chip producers can afford one. Not surprisingly, ASML is not allowed to sell these machines to China.
But Taiwan Semiconductor is in top 3 customers of ASML, along with Samsung and Intel.
https://www.cnbc.com/2022/03/23/inside-asml-the-company-advanced-chipmakers-use-for-euv-lithography.html