Maybe "binning" occurs where Western re-branders like PP, Planet X, Vitus, Ribble, Ritte, probably Enve, et al get the frames on the better side of the QC bell curve?
Sorry what? Panda Podium is just a retailer and the current Ritte and Enve are bike brands with unique products. I don't think anything is being binned differently between Tavelo products let alone between open molds and Ritte or Enve bikes.
Has anyone even confirmed that this Tavelo is an open mold that you can buy through a different brand like the Attack was?
While I could believe binning is done during initial production runs to get new bikes out for race teams, this doesnt make sense as a general practice because it assumes that the QC would be good enough to sort the frames at a per frame level and that the factories would be willing to incur that cost on an ongoing basis.
On the other hand, I think its more surprising that XDS and Pardus have not tried to go more international given their involvement in the chinese olympic team efforts. That said, if a company goes big into road racing, I would bet on Farsports.