My research suggests that Zipp are made from scratch in the States, but i haven't got that much money to throw at a set of wheels. Mavic are made in France. Eaton are made in China.
I am talking to Yishun Bike. They have been very clear in my mails back and forth, answering everything from what model number the hubs are, photos of where the brake track is, their recommendations on what ceramic pads to use, max recommended psi on the rim etc etc.
Even supplied technical drawings of the rim, profile and cross section, photos from every conceivable angle...
Very tempted to take a punt on a pair of 50mm clinchers:-
"The rim is made of 220 degree high TG carbon and made with 24mm rim width. The price for NP50C-24mm width now is 608usd/pair, and weighs 1507g +/-30g/pair.
The Novatec hubs model is AS01CB+FS12CB.
For the rims, 3K matt or glossy...
Every wheelset ordered from us will come with 2 pair free carbon brake pads, spare spokes and nipples.
By the way, we have ceramic brake pads, the ceramic brake pads will greatly protect the clincher brake surface better. I suggest perhaps you can try it. it's 10usd/pair."
The photos all look very good quality, but the proof of the proverbial pudding is in the eating...