The homepage production-line labels are exactly three words long: Sintered Finished, HIP Sintered, Rough Grinding. That is the public process claim.
HIP — hot isostatic pressing — is the extra density step after a conventional sinter. The brazed-tips product page states that HIP sintering can add bending strength versus a non-HIP sinter. We do not invent a percentage that is not on zzcarbidetools.com body copy.
Rough grinding is stock removal before the finish grind. It is listed as a separate station, not as a marketing slogan.
The furnace photograph on this page is a real shop photo from the source site, not a stock render.