What is the business of Cronos group?

Excuse me, I'm curious about Cronos group. Could you please elaborate on the nature of their business? I've heard some buzz about them in the crypto and finance circles, but I'm not quite sure what they specialize in. Do they focus on blockchain technology? Or perhaps they're involved in some innovative financial services? It would be great if you could give me a brief overview of their operations and maybe highlight some of their key projects or products. Thank you for your time and insight.