I too had my Ti gravel bike done by Walty, although, I went indirectly via Carbon Speed. Reason for this was I've no experience with designing a bike frame, and CS helped me with that. There was an extra added cost but it was worth it. The frame was very well made and after a year (3k km) it is still a wonderful ride.
As for other Chinese Ti frame manufacturer, I am only aware of a representative Lily Liu (see screen shot). I don't know what company she represents but it's definitely not Walty. I'm guessing it's Hi-Light Titanium Bikes (see ss). Both have Ti frames, fork, stems, handle bars and seat posts. Honestly, I don't know much about either. I did inquire with Hi-Light once regarding a custom gravel fork and the price was just to high (US$800 iirc). That's actually more than what I paid Carbon Speed (includes shipping fee but less local tax/duties) 2 years ago for a whole gravel bike frame.
Btw, the screen shots are their FaceBook account. Both had joined a local Ti bike group I'm a member of. You might want to check them out. Again, I've no experience dealing with either and I don't know much about them too.
Edit: Was reading some of the post made by Lily Liu, she mentioned price is around US$750. Not sure if that's for a custom built or pre-built model.