Awesome wheels. If you fully appreciate the attention to detail that goes into everything that has the PSIMET name on it, there wouldn't be a discussion for you. What you buy from him is the same stuff he rides himself. As has been widely documented, the lead time can be longer than others, but it isn't because he's twiddling his thumbs. He's only gotten a set built up for himself this week because he's been working on everyone else's orders. The wait is absolutely worth it. He isn't pulling something from the shelf and sending it to you. He assembles the specific components that you choose after you order it.
Those rims and hubs look suspiciously like the stuff that Yishun sells for $500 or so for the pair. RBR has a HUGE thread on those China/Taiwan rims/wheels.
Before y'all jump my stuff, I haven't seen a pair in person. I'm going by what's on the website.
If you're referring to the carbon rims I use - I use a few different ones. All of them are from Taiwan. Sorry. They are from Gigantex and other factories. There are a TON of factories making carbon rims now. The ones I sell I test for at least a year/season. I recently switched to newer ones because of the nice performance. The ones I am using for cross - in the 50mm depth are from Gigantex - and this is my third year of racing/selling them in cross specifically.
I'm not bungled into a spec like others though so I have the option of building with what I want when I want to in order to meet a customer's needs instead of in order to maximize a price point. It works.