They are not open mold, but the brands have not developed the molds either.
From this thread: viewtopic.php?f=3&t=113717&p=1023878#p1023878
Open-mould refers to a frame/set that is available through several vendors. Think of it like "open source" software.
Non-open-mould refers to a frame/set that is either proprietary to a specific brand, or a frame design that is specifically sourced to brands from design firms.
Examples of the latter can be Edge Design, Axman, and a whole lot of other frames that you may or may not hear about since you aren't a manufacturer or brand.
These design firms rarely, if ever, sell their frames to consumers. The only chance to get those is through a purchase of a sample frame through a brand that ordered one. Very, very rarely one may show up on a marketplace such as eBay or CL, or wherever, and these are usually a sample that was passed down the line from a brand after they finished their evaluation.
If a brand (particularly those that are starting off) is unable to hire their own designers and engineers, they will source this skill from a design firm.
Sometimes an upcoming brand can't afford a design firm, so they will source from an open-mould vendor instead and give it a paint job.
Examples of this: Ritte's Bosberg, PedalForce frames, and as we saw at the most recent Eurobike even some slightly-more established brands are sourcing open-mould TT frames.
Examples of the 'open-mould' frames can be found through common vendors, such as Hong-Fu, Deng-Fu, Flyxii, etc:.
BTW - Many of the brands you mentioned, especially Ritte, will claim immediately "We worked with the manufacturer to perfect the geometries" or "design" or whatever. They're bullshitting you to what extent you want to believe the phrase "worked with" to develop "their own" whatever. The design firms give options, you as a brand check off the boxes. That's as far as it goes, really. They won't make a certain geo longer or shorter for a particular brand because that would mean a whole new mold, which if these guys could afford in the first place they wouldn't be using these types of frames.
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