High-grade. According to the query of the public review website, Chen Yin Hao Iceland Silver Hair Puerh Tea Pure Material Spring Tea, belongs to the palace grade high-grade Puerh tea grade division. Originating from Yunnan, the source of tea in the world, it was founded in 2018 by Mr. Chen Yinhai, who has been operating in the puerh tea industry for more than ten years, following the core concept of "the hill determines the flavor".