I was under the impression that the TMB SS lenses were made in the ROC by the same people who made Astronomics telescope optics. These are not bad lenses and IMO usually pretty good but not usually MIJ class optics unless you get really lucky. I've seen many really good Chinese (ROC) made lenses and a few exceptionally good Chinese (ROC) made lenses.
I know the original TMB Optics lenses were LZOS OK4 ED and are marked as such. Then the non-Russian lenses came and AFAIK there may have been some initially figured in Japan but production was in the ROC (Taiwan) from lenses starting with the first blue labeled "TMB Optical" lenses and continued through the Original "TMB Signature Series" labeled telescope were Chinese made. AFAIK there is no Canon Optron in operation in ROC only Canon who is making lenses there for Canon EF lenses.
Don't sell your TMB130 before you get a good look through the Agema 150, you may be surprised.
It was never officially revealed who made these lenses:
Unfortunately, Thomas passed away very shortly after the Signature Series was introduced. I am not aware that he disclosed more on the TMB group or CN.
We can all speculate of course. But the only authoritative source left to go on would be the comments of the remaining partner in the venture, Michael Bieler of Astronomics:
The last post is in response to a post relating Williams Optics (ROC) to the SS lenses. His response would tend to eliminate that possibility.
In any event, it was pretty clear from the acrimony that Thomas needed to change his sourcing. And I doubt he would have compromised one iota on quality.