there is plenty of information available on Engine thread. if you have time you can read out.What's the source of that. I did not know that Chinese companies are supplying critical components for GE and RR.
for example, this company. Wuxi Hangya Technology Co., Ltd is the largest supplier of compressor blades in the world. by 2021, they have delivered 1.5 Million compressor blades to GE/Safran..

China also has plenty of suppliers to Rolls Royce. one Chinese company supply special Steel to SKF. world largest manufacturer of bearings, used in all high tech products include Engines.