I think The telegraph might have mistaken DUV with EUV. Western journalists have become so bad that they are only good at writing fake news and never bother to do some research.
Research company TechInsights analysed the Mate 60’s main processor chip and concluded it was manufactured using what is known as EUV, or extreme ultraviolet lithography. EUV is an advanced manufacturing technique used to etch a chip’s inner workings into its silicon.
A closely-guarded secret, EUV was developed by Dutch company ASML and incorporated into its multi-billion dollar chip manufacturing machines. China is now largely blocked from buying these machines