Wow super nice! Any reason why you went with Sunfly vs cards mold?
The edge spot alignment is spot on!
When I created this set, to my knowledge, only SunFly created cards mold chips.
What you say about the edge alignment is the reason to go with SF vs. Alibaba sellers : edge alignment is top noch with SF !
Another very big advantage of the SF ones over the Alibaba is that SF does not have a single spinner and they can print the exact same chips over different batches from different years. I've re-ordered 40 x €20 this year and their colors are 100% matching.
What some people prefer on the Alibaba chips is the matte edges and the fact that they are sharper. From my end, for ceramics, I prefer slightly rounded edges. It makes them easier to shuffle (remember, the edges of a ceramic chip will not become rounder with use).
How do you plan to use this feature? Are you going to pass every single chip under UV before you pay your players? Seems like a huge hassle.