1. Scarce resources: Yak horn is a very scarce resource. Yak grows slowly, and its cutin lines are delicate, so it is more durable and not easy to be damaged when making combs. Yellow horns are relatively common.

2. Function and efficacy: Yak horn has some unique functions and efficacy. It is considered to have the function of cooling and relieving fever, and can promote the blood circulation of human body. Yaks live in areas above 3 meters above sea level, where there is absolutely no pollution, and yak horns are purer than yellow horns.