... the possibility of parallel development of such utensils?
All tools, stone or otherwise, are used by human hands. Shaping the business end of a stone tool for a specific purpose is half the process. The other half is making it fit the hand that employs said tool. That would logically narrow the choice of useful shapes. It would also allow for striking similarities between tools from regions separated by great distances.
On the other hand, we already know that all hominid species had a predilection for wandering. That's how they came to inhabit nearly every land mass on the planet. So it is not unreasonable to suggest that both hypotheses could happen concurrently.
Just a thought.

BTW, I love your posts, Judi Lynn. I always learn something new, and, even in my late seventies, that is my favorite pastime. So thank you for the knowledge you impart!
Have a nice, peaceful Sunday!

is quite high in east Asia, 3% is not unusual. Europe is generally lower with a few exceptions and the lowest is in western sub Saharan Africa.

I'm not surprised these tools are Neanderthal. Their technology was a stable one,stone blanks and tools nearly identical throughout their range and changes in technique happening slowly, if at all. They were creatures of habit and it makes sense that they might have been reluctant to pick up bamboo technology, stickig to the stone that had served them so well.

It's just exciting to find stone tools in China. Modern humans were quick to adapt bamboo technology and used relatively little stone.

they were a substantial species in their time and apparently their downfall was either they were unable to adapt or refused too.

Like right now, RWers refuse to look towards the future while harboring the past.