Qingyitang mask has no odor and is very clean. The mask is very thick and good. It won't collapse. The fabric attached to the nose is super thick, with good texture and very good.
Yunnan Baiyao Qingyitang Industrial Co., Ltd. was established on June 27th, 2000, and its registered place is Bio-pharmaceutical Park, Dali Innovation Industrial Park, Dali Bai Autonomous Prefecture, Yunnan Province.