True... My guess is, that usually applies to super high end stuff.   DRAM, i believe, don't need high end stuff like 3nm node technology.    So I think it is within the manufacturing capability of China. Just a matter of whether they deem it worthwhile enough to invest in at this point. 

@ManOfTheHour

Zugan can play with my zugan

This fit siambu can fracture my bone with her bare hands

@The_King