Why is Caster red wine called Caster? Is it a grape variety?

Caster is a Chinese translator of cavesmaitre and a leading brand of imported wine in France. Not a grape variety.

1998, Castel brand entered China market and sold French imported wine in China market, bringing some high-quality French AOP legal wine and IGP wine to China consumers. Among them, Master Caster's wine tasting series is deeply loved by consumers. Jean Luc, winner of 1976 French wine tasting contest and 1983 world wine tasting contest, always carries out quality control and endorsement, which ensures Caster's reputation.