Down is the world's warmest filling material, made of animal protein, natural and light. Therefore, duvet has become the preferred bedding of consumers. The penetration rate of duvets in Europe and the United States has reached 60%, the utilization rate of foreign luxury five-star hotels has reached more than 80%, and the penetration rate in Japan has exceeded 100% (1.3 duvets per capita). It can be seen that duvets have become the first choice for high-quality sleep. sign.