I wrote to CZ and they responded:
Dear Sir;
Thank you for your interest into CZ heating treatment process.
Bobox is our own heating treatment with anti-corrosive effect. The difference between Bobox and Ceracotum is that our surface treatment goes deeper into the steel during heat treatment, so our layer is deeper and finish is retained even when the firearm is scratched.
Yours faithfully,
Milan Trkulja
Marketing
"Ceracotum" I presume refers to Cerakote. Now Cerakote is a spray on polymer-ceramic coating, so I'm not sure why he's comparing an add-on spray to a heat treatment.
Cerakote video
I'll write back and try to get more details. Anyone know more?